Home / 38,478.60-57,721.17-13,516.47

Finding the Fourth Proportional to 38,478.60, 57,721.17 and 13,516.47

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Solution

The fourth proportional to 38,478.60, 57,721.17 and 13,516.47 is: 20,275.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,478.60 : 57,721.17 = 13,516.47 : x
  2. Step 2: Convert to fraction form
    38,478.60/57,721.17 = 13,516.47/x
  3. Step 3: Cross multiply
    38,478.60x = 57,721.17 × 13,516.47
  4. Step 4: Simplify right side
    38,478.60x = 780,186,462.67
  5. Step 5: Solve for x
    x = 780,186,462.67/38,478.60
  6. Step 6: Final answer
    x = 20,275.85

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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.