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Finding the Fourth Proportional to 27,931.68, 38,545.68 and 15,998.88

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Solution

The fourth proportional to 27,931.68, 38,545.68 and 15,998.88 is: 22,078.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.68 : 38,545.68 = 15,998.88 : x
  2. Step 2: Convert to fraction form
    27,931.68/38,545.68 = 15,998.88/x
  3. Step 3: Cross multiply
    27,931.68x = 38,545.68 × 15,998.88
  4. Step 4: Simplify right side
    27,931.68x = 616,687,708.84
  5. Step 5: Solve for x
    x = 616,687,708.84/27,931.68
  6. Step 6: Final answer
    x = 22,078.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.