Home / 30,961.15-42,724.02-18,214.84

Finding the Fourth Proportional to 30,961.15, 42,724.02 and 18,214.84

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Solution

The fourth proportional to 30,961.15, 42,724.02 and 18,214.84 is: 25,135.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,961.15 : 42,724.02 = 18,214.84 : x
  2. Step 2: Convert to fraction form
    30,961.15/42,724.02 = 18,214.84/x
  3. Step 3: Cross multiply
    30,961.15x = 42,724.02 × 18,214.84
  4. Step 4: Simplify right side
    30,961.15x = 778,211,188.46
  5. Step 5: Solve for x
    x = 778,211,188.46/30,961.15
  6. Step 6: Final answer
    x = 25,135.09

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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.