Home / 31,691.38-43,738.68-18,260.06

Finding the Fourth Proportional to 31,691.38, 43,738.68 and 18,260.06

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Solution

The fourth proportional to 31,691.38, 43,738.68 and 18,260.06 is: 25,201.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.38 : 43,738.68 = 18,260.06 : x
  2. Step 2: Convert to fraction form
    31,691.38/43,738.68 = 18,260.06/x
  3. Step 3: Cross multiply
    31,691.38x = 43,738.68 × 18,260.06
  4. Step 4: Simplify right side
    31,691.38x = 798,670,921.12
  5. Step 5: Solve for x
    x = 798,670,921.12/31,691.38
  6. Step 6: Final answer
    x = 25,201.52

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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.