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Finding the Fourth Proportional to 33,147.38, 45,743.39 and 18,243.38

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Solution

The fourth proportional to 33,147.38, 45,743.39 and 18,243.38 is: 25,175.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,147.38 : 45,743.39 = 18,243.38 : x
  2. Step 2: Convert to fraction form
    33,147.38/45,743.39 = 18,243.38/x
  3. Step 3: Cross multiply
    33,147.38x = 45,743.39 × 18,243.38
  4. Step 4: Simplify right side
    33,147.38x = 834,513,726.32
  5. Step 5: Solve for x
    x = 834,513,726.32/33,147.38
  6. Step 6: Final answer
    x = 25,175.86

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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.