Home / 31,268.20-43,149.18-17,120.56

Finding the Fourth Proportional to 31,268.20, 43,149.18 and 17,120.56

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Solution

The fourth proportional to 31,268.20, 43,149.18 and 17,120.56 is: 23,625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,268.20 : 43,149.18 = 17,120.56 : x
  2. Step 2: Convert to fraction form
    31,268.20/43,149.18 = 17,120.56/x
  3. Step 3: Cross multiply
    31,268.20x = 43,149.18 × 17,120.56
  4. Step 4: Simplify right side
    31,268.20x = 738,738,125.14
  5. Step 5: Solve for x
    x = 738,738,125.14/31,268.20
  6. Step 6: Final answer
    x = 23,625.86

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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.