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Finding the Fourth Proportional to 15,769.01, 21,761.17 and 8,695.82

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Solution

The fourth proportional to 15,769.01, 21,761.17 and 8,695.82 is: 12,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.01 : 21,761.17 = 8,695.82 : x
  2. Step 2: Convert to fraction form
    15,769.01/21,761.17 = 8,695.82/x
  3. Step 3: Cross multiply
    15,769.01x = 21,761.17 × 8,695.82
  4. Step 4: Simplify right side
    15,769.01x = 189,231,217.31
  5. Step 5: Solve for x
    x = 189,231,217.31/15,769.01
  6. Step 6: Final answer
    x = 12,000.20

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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.