Home / 21,517.12-29,694-11,957.90

Finding the Fourth Proportional to 21,517.12, 29,694 and 11,957.90

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Solution

The fourth proportional to 21,517.12, 29,694 and 11,957.90 is: 16,502.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.12 : 29,694 = 11,957.90 : x
  2. Step 2: Convert to fraction form
    21,517.12/29,694 = 11,957.90/x
  3. Step 3: Cross multiply
    21,517.12x = 29,694 × 11,957.90
  4. Step 4: Simplify right side
    21,517.12x = 355,077,882.60
  5. Step 5: Solve for x
    x = 355,077,882.60/21,517.12
  6. Step 6: Final answer
    x = 16,502.11

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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.