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Finding the Fourth Proportional to 12,959,836.17, 17,884,167.56 and 7,079,375.90

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Solution

The fourth proportional to 12,959,836.17, 17,884,167.56 and 7,079,375.90 is: 9,769,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959,836.17 : 17,884,167.56 = 7,079,375.90 : x
  2. Step 2: Convert to fraction form
    12,959,836.17/17,884,167.56 = 7,079,375.90/x
  3. Step 3: Cross multiply
    12,959,836.17x = 17,884,167.56 × 7,079,375.90
  4. Step 4: Simplify right side
    12,959,836.17x = 126,608,744,744,103.39
  5. Step 5: Solve for x
    x = 126,608,744,744,103.39/12,959,836.17
  6. Step 6: Final answer
    x = 9,769,316.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.