Home / 27,876.41-38,470.61-15,939.74

Finding the Fourth Proportional to 27,876.41, 38,470.61 and 15,939.74

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Solution

The fourth proportional to 27,876.41, 38,470.61 and 15,939.74 is: 21,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.41 : 38,470.61 = 15,939.74 : x
  2. Step 2: Convert to fraction form
    27,876.41/38,470.61 = 15,939.74/x
  3. Step 3: Cross multiply
    27,876.41x = 38,470.61 × 15,939.74
  4. Step 4: Simplify right side
    27,876.41x = 613,211,521.04
  5. Step 5: Solve for x
    x = 613,211,521.04/27,876.41
  6. Step 6: Final answer
    x = 21,997.51

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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.