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Finding the Fourth Proportional to 18,651.17, 25,737.05 and 10,691.57

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Solution

The fourth proportional to 18,651.17, 25,737.05 and 10,691.57 is: 14,753.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.17 : 25,737.05 = 10,691.57 : x
  2. Step 2: Convert to fraction form
    18,651.17/25,737.05 = 10,691.57/x
  3. Step 3: Cross multiply
    18,651.17x = 25,737.05 × 10,691.57
  4. Step 4: Simplify right side
    18,651.17x = 275,169,418.21
  5. Step 5: Solve for x
    x = 275,169,418.21/18,651.17
  6. Step 6: Final answer
    x = 14,753.47

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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.