Home / 31,691.20-43,755.24-28,323.22

Finding the Fourth Proportional to 31,691.20, 43,755.24 and 28,323.22

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Solution

The fourth proportional to 31,691.20, 43,755.24 and 28,323.22 is: 39,105.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.20 : 43,755.24 = 28,323.22 : x
  2. Step 2: Convert to fraction form
    31,691.20/43,755.24 = 28,323.22/x
  3. Step 3: Cross multiply
    31,691.20x = 43,755.24 × 28,323.22
  4. Step 4: Simplify right side
    31,691.20x = 1,239,289,288.67
  5. Step 5: Solve for x
    x = 1,239,289,288.67/31,691.20
  6. Step 6: Final answer
    x = 39,105.16

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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.