Home / 28,132.92-38,824.11-15,387.30

Finding the Fourth Proportional to 28,132.92, 38,824.11 and 15,387.30

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Solution

The fourth proportional to 28,132.92, 38,824.11 and 15,387.30 is: 21,234.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.92 : 38,824.11 = 15,387.30 : x
  2. Step 2: Convert to fraction form
    28,132.92/38,824.11 = 15,387.30/x
  3. Step 3: Cross multiply
    28,132.92x = 38,824.11 × 15,387.30
  4. Step 4: Simplify right side
    28,132.92x = 597,398,227.80
  5. Step 5: Solve for x
    x = 597,398,227.80/28,132.92
  6. Step 6: Final answer
    x = 21,234.85

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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.