Home / 31,391.26-43,321.98-21,962.86

Finding the Fourth Proportional to 31,391.26, 43,321.98 and 21,962.86

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Solution

The fourth proportional to 31,391.26, 43,321.98 and 21,962.86 is: 30,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.26 : 43,321.98 = 21,962.86 : x
  2. Step 2: Convert to fraction form
    31,391.26/43,321.98 = 21,962.86/x
  3. Step 3: Cross multiply
    31,391.26x = 43,321.98 × 21,962.86
  4. Step 4: Simplify right side
    31,391.26x = 951,474,581.66
  5. Step 5: Solve for x
    x = 951,474,581.66/31,391.26
  6. Step 6: Final answer
    x = 30,310.17

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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.