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Finding the Fourth Proportional to 10,418.52, 15,609.54 and 8,674.71

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Solution

The fourth proportional to 10,418.52, 15,609.54 and 8,674.71 is: 12,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.52 : 15,609.54 = 8,674.71 : x
  2. Step 2: Convert to fraction form
    10,418.52/15,609.54 = 8,674.71/x
  3. Step 3: Cross multiply
    10,418.52x = 15,609.54 × 8,674.71
  4. Step 4: Simplify right side
    10,418.52x = 135,408,232.73
  5. Step 5: Solve for x
    x = 135,408,232.73/10,418.52
  6. Step 6: Final answer
    x = 12,996.88

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1.5x scale

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.