Home / 13,691.27-20,505.45-8,693.28

Finding the Fourth Proportional to 13,691.27, 20,505.45 and 8,693.28

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Solution

The fourth proportional to 13,691.27, 20,505.45 and 8,693.28 is: 13,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.27 : 20,505.45 = 8,693.28 : x
  2. Step 2: Convert to fraction form
    13,691.27/20,505.45 = 8,693.28/x
  3. Step 3: Cross multiply
    13,691.27x = 20,505.45 × 8,693.28
  4. Step 4: Simplify right side
    13,691.27x = 178,259,618.38
  5. Step 5: Solve for x
    x = 178,259,618.38/13,691.27
  6. Step 6: Final answer
    x = 13,019.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.