Home / 31,479-43,440.16-17,331.92

Finding the Fourth Proportional to 31,479, 43,440.16 and 17,331.92

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Solution

The fourth proportional to 31,479, 43,440.16 and 17,331.92 is: 23,917.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,479 : 43,440.16 = 17,331.92 : x
  2. Step 2: Convert to fraction form
    31,479/43,440.16 = 17,331.92/x
  3. Step 3: Cross multiply
    31,479x = 43,440.16 × 17,331.92
  4. Step 4: Simplify right side
    31,479x = 752,901,377.91
  5. Step 5: Solve for x
    x = 752,901,377.91/31,479
  6. Step 6: Final answer
    x = 23,917.58

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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.