Home / 31,823.97-43,912.17-18,392.61

Finding the Fourth Proportional to 31,823.97, 43,912.17 and 18,392.61

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Solution

The fourth proportional to 31,823.97, 43,912.17 and 18,392.61 is: 25,378.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,823.97 : 43,912.17 = 18,392.61 : x
  2. Step 2: Convert to fraction form
    31,823.97/43,912.17 = 18,392.61/x
  3. Step 3: Cross multiply
    31,823.97x = 43,912.17 × 18,392.61
  4. Step 4: Simplify right side
    31,823.97x = 807,659,417.06
  5. Step 5: Solve for x
    x = 807,659,417.06/31,823.97
  6. Step 6: Final answer
    x = 25,378.96

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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.