Home / 31,500.60-43,356.78-29,686.20

Finding the Fourth Proportional to 31,500.60, 43,356.78 and 29,686.20

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Solution

The fourth proportional to 31,500.60, 43,356.78 and 29,686.20 is: 40,859.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500.60 : 43,356.78 = 29,686.20 : x
  2. Step 2: Convert to fraction form
    31,500.60/43,356.78 = 29,686.20/x
  3. Step 3: Cross multiply
    31,500.60x = 43,356.78 × 29,686.20
  4. Step 4: Simplify right side
    31,500.60x = 1,287,098,042.44
  5. Step 5: Solve for x
    x = 1,287,098,042.44/31,500.60
  6. Step 6: Final answer
    x = 40,859.48

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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.