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Finding the Fourth Proportional to 25,195.43, 34,766.02 and 15,121.73

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Solution

The fourth proportional to 25,195.43, 34,766.02 and 15,121.73 is: 20,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,195.43 : 34,766.02 = 15,121.73 : x
  2. Step 2: Convert to fraction form
    25,195.43/34,766.02 = 15,121.73/x
  3. Step 3: Cross multiply
    25,195.43x = 34,766.02 × 15,121.73
  4. Step 4: Simplify right side
    25,195.43x = 525,722,367.61
  5. Step 5: Solve for x
    x = 525,722,367.61/25,195.43
  6. Step 6: Final answer
    x = 20,865.78

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1.5x scale

Why These Related Problems?

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