Home / 31,549.53-43,540.69-18,121.35

Finding the Fourth Proportional to 31,549.53, 43,540.69 and 18,121.35

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Solution

The fourth proportional to 31,549.53, 43,540.69 and 18,121.35 is: 25,008.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,549.53 : 43,540.69 = 18,121.35 : x
  2. Step 2: Convert to fraction form
    31,549.53/43,540.69 = 18,121.35/x
  3. Step 3: Cross multiply
    31,549.53x = 43,540.69 × 18,121.35
  4. Step 4: Simplify right side
    31,549.53x = 789,016,234.68
  5. Step 5: Solve for x
    x = 789,016,234.68/31,549.53
  6. Step 6: Final answer
    x = 25,008.81

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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.