Home / 31,279.14-43,185.30-27,916.20

Finding the Fourth Proportional to 31,279.14, 43,185.30 and 27,916.20

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Solution

The fourth proportional to 31,279.14, 43,185.30 and 27,916.20 is: 38,542.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,279.14 : 43,185.30 = 27,916.20 : x
  2. Step 2: Convert to fraction form
    31,279.14/43,185.30 = 27,916.20/x
  3. Step 3: Cross multiply
    31,279.14x = 43,185.30 × 27,916.20
  4. Step 4: Simplify right side
    31,279.14x = 1,205,569,471.86
  5. Step 5: Solve for x
    x = 1,205,569,471.86/31,279.14
  6. Step 6: Final answer
    x = 38,542.28

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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.