Home / 31,827.92-43,919.16-18,397.04

Finding the Fourth Proportional to 31,827.92, 43,919.16 and 18,397.04

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Solution

The fourth proportional to 31,827.92, 43,919.16 and 18,397.04 is: 25,385.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,827.92 : 43,919.16 = 18,397.04 : x
  2. Step 2: Convert to fraction form
    31,827.92/43,919.16 = 18,397.04/x
  3. Step 3: Cross multiply
    31,827.92x = 43,919.16 × 18,397.04
  4. Step 4: Simplify right side
    31,827.92x = 807,982,543.29
  5. Step 5: Solve for x
    x = 807,982,543.29/31,827.92
  6. Step 6: Final answer
    x = 25,385.97

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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.