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Finding the Fourth Proportional to 11,616.35, 17,436.80 and 7,236.88

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Solution

The fourth proportional to 11,616.35, 17,436.80 and 7,236.88 is: 10,862.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,616.35 : 17,436.80 = 7,236.88 : x
  2. Step 2: Convert to fraction form
    11,616.35/17,436.80 = 7,236.88/x
  3. Step 3: Cross multiply
    11,616.35x = 17,436.80 × 7,236.88
  4. Step 4: Simplify right side
    11,616.35x = 126,188,003.68
  5. Step 5: Solve for x
    x = 126,188,003.68/11,616.35
  6. Step 6: Final answer
    x = 10,862.97

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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.