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Finding the Fourth Proportional to 18,432, 25,434.84 and 10,472.88

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Solution

The fourth proportional to 18,432, 25,434.84 and 10,472.88 is: 14,451.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,432 : 25,434.84 = 10,472.88 : x
  2. Step 2: Convert to fraction form
    18,432/25,434.84 = 10,472.88/x
  3. Step 3: Cross multiply
    18,432x = 25,434.84 × 10,472.88
  4. Step 4: Simplify right side
    18,432x = 266,376,027.14
  5. Step 5: Solve for x
    x = 266,376,027.14/18,432
  6. Step 6: Final answer
    x = 14,451.82

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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.