Home / 38,581.28-57,876.17-12,279.87

Finding the Fourth Proportional to 38,581.28, 57,876.17 and 12,279.87

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Solution

The fourth proportional to 38,581.28, 57,876.17 and 12,279.87 is: 18,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,581.28 : 57,876.17 = 12,279.87 : x
  2. Step 2: Convert to fraction form
    38,581.28/57,876.17 = 12,279.87/x
  3. Step 3: Cross multiply
    38,581.28x = 57,876.17 × 12,279.87
  4. Step 4: Simplify right side
    38,581.28x = 710,711,782.30
  5. Step 5: Solve for x
    x = 710,711,782.30/38,581.28
  6. Step 6: Final answer
    x = 18,421.16

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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.