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Finding the Fourth Proportional to 15,191,552.09, 20,964,481.97 and 8,996,951.14

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Solution

The fourth proportional to 15,191,552.09, 20,964,481.97 and 8,996,951.14 is: 12,415,875.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191,552.09 : 20,964,481.97 = 8,996,951.14 : x
  2. Step 2: Convert to fraction form
    15,191,552.09/20,964,481.97 = 8,996,951.14/x
  3. Step 3: Cross multiply
    15,191,552.09x = 20,964,481.97 × 8,996,951.14
  4. Step 4: Simplify right side
    15,191,552.09x = 188,616,419,862,104.97
  5. Step 5: Solve for x
    x = 188,616,419,862,104.97/15,191,552.09
  6. Step 6: Final answer
    x = 12,415,875.53

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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.