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Finding the Fourth Proportional to 8,750.69, 13,132.19 and 7,914.17

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Solution

The fourth proportional to 8,750.69, 13,132.19 and 7,914.17 is: 11,876.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.69 : 13,132.19 = 7,914.17 : x
  2. Step 2: Convert to fraction form
    8,750.69/13,132.19 = 7,914.17/x
  3. Step 3: Cross multiply
    8,750.69x = 13,132.19 × 7,914.17
  4. Step 4: Simplify right side
    8,750.69x = 103,930,384.13
  5. Step 5: Solve for x
    x = 103,930,384.13/8,750.69
  6. Step 6: Final answer
    x = 11,876.82

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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.