Home / 31,781.97-43,861.23-18,353.79

Finding the Fourth Proportional to 31,781.97, 43,861.23 and 18,353.79

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Solution

The fourth proportional to 31,781.97, 43,861.23 and 18,353.79 is: 25,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.97 : 43,861.23 = 18,353.79 : x
  2. Step 2: Convert to fraction form
    31,781.97/43,861.23 = 18,353.79/x
  3. Step 3: Cross multiply
    31,781.97x = 43,861.23 × 18,353.79
  4. Step 4: Simplify right side
    31,781.97x = 805,019,804.56
  5. Step 5: Solve for x
    x = 805,019,804.56/31,781.97
  6. Step 6: Final answer
    x = 25,329.45

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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.