Home / 31,691.86-43,739.38-18,260.52

Finding the Fourth Proportional to 31,691.86, 43,739.38 and 18,260.52

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Solution

The fourth proportional to 31,691.86, 43,739.38 and 18,260.52 is: 25,202.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.86 : 43,739.38 = 18,260.52 : x
  2. Step 2: Convert to fraction form
    31,691.86/43,739.38 = 18,260.52/x
  3. Step 3: Cross multiply
    31,691.86x = 43,739.38 × 18,260.52
  4. Step 4: Simplify right side
    31,691.86x = 798,703,823.28
  5. Step 5: Solve for x
    x = 798,703,823.28/31,691.86
  6. Step 6: Final answer
    x = 25,202.18

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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.