Home / 21,517.52-29,693.79-13,134.02

Finding the Fourth Proportional to 21,517.52, 29,693.79 and 13,134.02

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Solution

The fourth proportional to 21,517.52, 29,693.79 and 13,134.02 is: 18,124.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.52 : 29,693.79 = 13,134.02 : x
  2. Step 2: Convert to fraction form
    21,517.52/29,693.79 = 13,134.02/x
  3. Step 3: Cross multiply
    21,517.52x = 29,693.79 × 13,134.02
  4. Step 4: Simplify right side
    21,517.52x = 389,998,683.27
  5. Step 5: Solve for x
    x = 389,998,683.27/21,517.52
  6. Step 6: Final answer
    x = 18,124.71

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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.