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Finding the Fourth Proportional to 25,611, 38,431.62 and 10,818.96

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Solution

The fourth proportional to 25,611, 38,431.62 and 10,818.96 is: 16,234.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,611 : 38,431.62 = 10,818.96 : x
  2. Step 2: Convert to fraction form
    25,611/38,431.62 = 10,818.96/x
  3. Step 3: Cross multiply
    25,611x = 38,431.62 × 10,818.96
  4. Step 4: Simplify right side
    25,611x = 415,790,159.52
  5. Step 5: Solve for x
    x = 415,790,159.52/25,611
  6. Step 6: Final answer
    x = 16,234.83

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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.