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Finding the Fourth Proportional to 38,607.66, 57,901.02 and 13,644.39

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Solution

The fourth proportional to 38,607.66, 57,901.02 and 13,644.39 is: 20,462.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,607.66 : 57,901.02 = 13,644.39 : x
  2. Step 2: Convert to fraction form
    38,607.66/57,901.02 = 13,644.39/x
  3. Step 3: Cross multiply
    38,607.66x = 57,901.02 × 13,644.39
  4. Step 4: Simplify right side
    38,607.66x = 790,024,098.28
  5. Step 5: Solve for x
    x = 790,024,098.28/38,607.66
  6. Step 6: Final answer
    x = 20,462.88

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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.