Home / 31,278.14-43,183.92-27,915.20

Finding the Fourth Proportional to 31,278.14, 43,183.92 and 27,915.20

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Solution

The fourth proportional to 31,278.14, 43,183.92 and 27,915.20 is: 38,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.14 : 43,183.92 = 27,915.20 : x
  2. Step 2: Convert to fraction form
    31,278.14/43,183.92 = 27,915.20/x
  3. Step 3: Cross multiply
    31,278.14x = 43,183.92 × 27,915.20
  4. Step 4: Simplify right side
    31,278.14x = 1,205,487,763.58
  5. Step 5: Solve for x
    x = 1,205,487,763.58/31,278.14
  6. Step 6: Final answer
    x = 38,540.90

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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.