Home / 20,743.38-28,625.25-11,791.86

Finding the Fourth Proportional to 20,743.38, 28,625.25 and 11,791.86

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Solution

The fourth proportional to 20,743.38, 28,625.25 and 11,791.86 is: 16,272.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.38 : 28,625.25 = 11,791.86 : x
  2. Step 2: Convert to fraction form
    20,743.38/28,625.25 = 11,791.86/x
  3. Step 3: Cross multiply
    20,743.38x = 28,625.25 × 11,791.86
  4. Step 4: Simplify right side
    20,743.38x = 337,544,940.47
  5. Step 5: Solve for x
    x = 337,544,940.47/20,743.38
  6. Step 6: Final answer
    x = 16,272.42

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1.5x scale

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.