Home / 31,382.39-43,286.20-20,046.85

Finding the Fourth Proportional to 31,382.39, 43,286.20 and 20,046.85

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Solution

The fourth proportional to 31,382.39, 43,286.20 and 20,046.85 is: 27,650.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,382.39 : 43,286.20 = 20,046.85 : x
  2. Step 2: Convert to fraction form
    31,382.39/43,286.20 = 20,046.85/x
  3. Step 3: Cross multiply
    31,382.39x = 43,286.20 × 20,046.85
  4. Step 4: Simplify right side
    31,382.39x = 867,752,095.51
  5. Step 5: Solve for x
    x = 867,752,095.51/31,382.39
  6. Step 6: Final answer
    x = 27,650.92

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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.