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Finding the Fourth Proportional to 11,672.39, 17,508.73 and 3,881.20

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Solution

The fourth proportional to 11,672.39, 17,508.73 and 3,881.20 is: 5,821.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,672.39 : 17,508.73 = 3,881.20 : x
  2. Step 2: Convert to fraction form
    11,672.39/17,508.73 = 3,881.20/x
  3. Step 3: Cross multiply
    11,672.39x = 17,508.73 × 3,881.20
  4. Step 4: Simplify right side
    11,672.39x = 67,954,819.70
  5. Step 5: Solve for x
    x = 67,954,819.70/11,672.39
  6. Step 6: Final answer
    x = 5,821.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.