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Finding the Fourth Proportional to 25,687.34, 38,531.01 and 10,885.88

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Solution

The fourth proportional to 25,687.34, 38,531.01 and 10,885.88 is: 16,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,687.34 : 38,531.01 = 10,885.88 : x
  2. Step 2: Convert to fraction form
    25,687.34/38,531.01 = 10,885.88/x
  3. Step 3: Cross multiply
    25,687.34x = 38,531.01 × 10,885.88
  4. Step 4: Simplify right side
    25,687.34x = 419,443,873.92
  5. Step 5: Solve for x
    x = 419,443,873.92/25,687.34
  6. Step 6: Final answer
    x = 16,328.82

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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.