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Finding the Fourth Proportional to 15,104, 20,844.80 and 8,481.28

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Solution

The fourth proportional to 15,104, 20,844.80 and 8,481.28 is: 11,704.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104 : 20,844.80 = 8,481.28 : x
  2. Step 2: Convert to fraction form
    15,104/20,844.80 = 8,481.28/x
  3. Step 3: Cross multiply
    15,104x = 20,844.80 × 8,481.28
  4. Step 4: Simplify right side
    15,104x = 176,790,585.34
  5. Step 5: Solve for x
    x = 176,790,585.34/15,104
  6. Step 6: Final answer
    x = 11,704.89

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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.