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Finding the Fourth Proportional to 25,129.70, 37,694.63 and 8,489.87

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Solution

The fourth proportional to 25,129.70, 37,694.63 and 8,489.87 is: 12,734.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,129.70 : 37,694.63 = 8,489.87 : x
  2. Step 2: Convert to fraction form
    25,129.70/37,694.63 = 8,489.87/x
  3. Step 3: Cross multiply
    25,129.70x = 37,694.63 × 8,489.87
  4. Step 4: Simplify right side
    25,129.70x = 320,022,277.48
  5. Step 5: Solve for x
    x = 320,022,277.48/25,129.70
  6. Step 6: Final answer
    x = 12,734.83

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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.