Home / 27,879.27-38,473.43-15,942.85

Finding the Fourth Proportional to 27,879.27, 38,473.43 and 15,942.85

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Solution

The fourth proportional to 27,879.27, 38,473.43 and 15,942.85 is: 22,001.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.27 : 38,473.43 = 15,942.85 : x
  2. Step 2: Convert to fraction form
    27,879.27/38,473.43 = 15,942.85/x
  3. Step 3: Cross multiply
    27,879.27x = 38,473.43 × 15,942.85
  4. Step 4: Simplify right side
    27,879.27x = 613,376,123.48
  5. Step 5: Solve for x
    x = 613,376,123.48/27,879.27
  6. Step 6: Final answer
    x = 22,001.15

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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.