Home / 42,331.50-63,489.15-21,265.90

Finding the Fourth Proportional to 42,331.50, 63,489.15 and 21,265.90

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Solution

The fourth proportional to 42,331.50, 63,489.15 and 21,265.90 is: 31,894.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,331.50 : 63,489.15 = 21,265.90 : x
  2. Step 2: Convert to fraction form
    42,331.50/63,489.15 = 21,265.90/x
  3. Step 3: Cross multiply
    42,331.50x = 63,489.15 × 21,265.90
  4. Step 4: Simplify right side
    42,331.50x = 1,350,153,756.26
  5. Step 5: Solve for x
    x = 1,350,153,756.26/42,331.50
  6. Step 6: Final answer
    x = 31,894.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.