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Finding the Fourth Proportional to 25,691.79, 35,450.55 and 15,614.85

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Solution

The fourth proportional to 25,691.79, 35,450.55 and 15,614.85 is: 21,545.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.79 : 35,450.55 = 15,614.85 : x
  2. Step 2: Convert to fraction form
    25,691.79/35,450.55 = 15,614.85/x
  3. Step 3: Cross multiply
    25,691.79x = 35,450.55 × 15,614.85
  4. Step 4: Simplify right side
    25,691.79x = 553,555,020.67
  5. Step 5: Solve for x
    x = 553,555,020.67/25,691.79
  6. Step 6: Final answer
    x = 21,545.99

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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.