Home / 30,688.40-42,376.56-29,113.76

Finding the Fourth Proportional to 30,688.40, 42,376.56 and 29,113.76

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Solution

The fourth proportional to 30,688.40, 42,376.56 and 29,113.76 is: 40,202.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,688.40 : 42,376.56 = 29,113.76 : x
  2. Step 2: Convert to fraction form
    30,688.40/42,376.56 = 29,113.76/x
  3. Step 3: Cross multiply
    30,688.40x = 42,376.56 × 29,113.76
  4. Step 4: Simplify right side
    30,688.40x = 1,233,740,997.47
  5. Step 5: Solve for x
    x = 1,233,740,997.47/30,688.40
  6. Step 6: Final answer
    x = 40,202.19

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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.