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Finding the Fourth Proportional to 22,761.56, 34,151.45 and 7,981.08

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Solution

The fourth proportional to 22,761.56, 34,151.45 and 7,981.08 is: 11,974.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,761.56 : 34,151.45 = 7,981.08 : x
  2. Step 2: Convert to fraction form
    22,761.56/34,151.45 = 7,981.08/x
  3. Step 3: Cross multiply
    22,761.56x = 34,151.45 × 7,981.08
  4. Step 4: Simplify right side
    22,761.56x = 272,565,414.66
  5. Step 5: Solve for x
    x = 272,565,414.66/22,761.56
  6. Step 6: Final answer
    x = 11,974.82

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1.5x scale

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.