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Finding the Fourth Proportional to 8,708.47, 13,033.82 and 7,930.26

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Solution

The fourth proportional to 8,708.47, 13,033.82 and 7,930.26 is: 11,869.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.47 : 13,033.82 = 7,930.26 : x
  2. Step 2: Convert to fraction form
    8,708.47/13,033.82 = 7,930.26/x
  3. Step 3: Cross multiply
    8,708.47x = 13,033.82 × 7,930.26
  4. Step 4: Simplify right side
    8,708.47x = 103,361,581.39
  5. Step 5: Solve for x
    x = 103,361,581.39/8,708.47
  6. Step 6: Final answer
    x = 11,869.09

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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.