Home / 31,367.86-43,287.72-17,221.61

Finding the Fourth Proportional to 31,367.86, 43,287.72 and 17,221.61

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Solution

The fourth proportional to 31,367.86, 43,287.72 and 17,221.61 is: 23,765.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,367.86 : 43,287.72 = 17,221.61 : x
  2. Step 2: Convert to fraction form
    31,367.86/43,287.72 = 17,221.61/x
  3. Step 3: Cross multiply
    31,367.86x = 43,287.72 × 17,221.61
  4. Step 4: Simplify right side
    31,367.86x = 745,484,275.27
  5. Step 5: Solve for x
    x = 745,484,275.27/31,367.86
  6. Step 6: Final answer
    x = 23,765.87

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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.