Home / 31,839.30-47,686.22-15,211.11

Finding the Fourth Proportional to 31,839.30, 47,686.22 and 15,211.11

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Solution

The fourth proportional to 31,839.30, 47,686.22 and 15,211.11 is: 22,781.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.30 : 47,686.22 = 15,211.11 : x
  2. Step 2: Convert to fraction form
    31,839.30/47,686.22 = 15,211.11/x
  3. Step 3: Cross multiply
    31,839.30x = 47,686.22 × 15,211.11
  4. Step 4: Simplify right side
    31,839.30x = 725,360,337.90
  5. Step 5: Solve for x
    x = 725,360,337.90/31,839.30
  6. Step 6: Final answer
    x = 22,781.92

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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.