Home / 31,843.82-43,932.21-20,512.43

Finding the Fourth Proportional to 31,843.82, 43,932.21 and 20,512.43

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Solution

The fourth proportional to 31,843.82, 43,932.21 and 20,512.43 is: 28,299.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,843.82 : 43,932.21 = 20,512.43 : x
  2. Step 2: Convert to fraction form
    31,843.82/43,932.21 = 20,512.43/x
  3. Step 3: Cross multiply
    31,843.82x = 43,932.21 × 20,512.43
  4. Step 4: Simplify right side
    31,843.82x = 901,156,162.71
  5. Step 5: Solve for x
    x = 901,156,162.71/31,843.82
  6. Step 6: Final answer
    x = 28,299.25

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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.