Home / 30,487,306,384.17-42,073,618,253.85-18,281,998,642.68

Finding the Fourth Proportional to 30,487,306,384.17, 42,073,618,253.85 and 18,281,998,642.68

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Solution

The fourth proportional to 30,487,306,384.17, 42,073,618,253.85 and 18,281,998,642.68 is: 25,229,839,006.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,487,306,384.17 : 42,073,618,253.85 = 18,281,998,642.68 : x
  2. Step 2: Convert to fraction form
    30,487,306,384.17/42,073,618,253.85 = 18,281,998,642.68/x
  3. Step 3: Cross multiply
    30,487,306,384.17x = 42,073,618,253.85 × 18,281,998,642.68
  4. Step 4: Simplify right side
    30,487,306,384.17x = 769,189,831,809,522,204,672
  5. Step 5: Solve for x
    x = 769,189,831,809,522,204,672/30,487,306,384.17
  6. Step 6: Final answer
    x = 25,229,839,006.34

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Half scale
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Double scale
Find fourth proportional to 30,487,306,385.17, 42,073,618,255.23 and 18,281,998,643.68
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.