Home / 31,721.80-43,761.42-22,295.80

Finding the Fourth Proportional to 31,721.80, 43,761.42 and 22,295.80

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Solution

The fourth proportional to 31,721.80, 43,761.42 and 22,295.80 is: 30,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.80 : 43,761.42 = 22,295.80 : x
  2. Step 2: Convert to fraction form
    31,721.80/43,761.42 = 22,295.80/x
  3. Step 3: Cross multiply
    31,721.80x = 43,761.42 × 22,295.80
  4. Step 4: Simplify right side
    31,721.80x = 975,695,868.04
  5. Step 5: Solve for x
    x = 975,695,868.04/31,721.80
  6. Step 6: Final answer
    x = 30,757.90

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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.