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Finding the Fourth Proportional to 21,566, 29,757.84 and 12,134.36

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Solution

The fourth proportional to 21,566, 29,757.84 and 12,134.36 is: 16,743.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,566 : 29,757.84 = 12,134.36 : x
  2. Step 2: Convert to fraction form
    21,566/29,757.84 = 12,134.36/x
  3. Step 3: Cross multiply
    21,566x = 29,757.84 × 12,134.36
  4. Step 4: Simplify right side
    21,566x = 361,092,343.38
  5. Step 5: Solve for x
    x = 361,092,343.38/21,566
  6. Step 6: Final answer
    x = 16,743.59

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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.