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Finding the Fourth Proportional to 10,614.70, 15,906.96 and 7,819.39

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Solution

The fourth proportional to 10,614.70, 15,906.96 and 7,819.39 is: 11,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,614.70 : 15,906.96 = 7,819.39 : x
  2. Step 2: Convert to fraction form
    10,614.70/15,906.96 = 7,819.39/x
  3. Step 3: Cross multiply
    10,614.70x = 15,906.96 × 7,819.39
  4. Step 4: Simplify right side
    10,614.70x = 124,382,723.95
  5. Step 5: Solve for x
    x = 124,382,723.95/10,614.70
  6. Step 6: Final answer
    x = 11,717.97

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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.