Home / 18,151.38-25,042.67-11,340.78

Finding the Fourth Proportional to 18,151.38, 25,042.67 and 11,340.78

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Solution

The fourth proportional to 18,151.38, 25,042.67 and 11,340.78 is: 15,646.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151.38 : 25,042.67 = 11,340.78 : x
  2. Step 2: Convert to fraction form
    18,151.38/25,042.67 = 11,340.78/x
  3. Step 3: Cross multiply
    18,151.38x = 25,042.67 × 11,340.78
  4. Step 4: Simplify right side
    18,151.38x = 284,003,354.38
  5. Step 5: Solve for x
    x = 284,003,354.38/18,151.38
  6. Step 6: Final answer
    x = 15,646.38

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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.