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Finding the Fourth Proportional to 38,480.69, 57,729.69 and 13,522.46

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Solution

The fourth proportional to 38,480.69, 57,729.69 and 13,522.46 is: 20,286.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.69 : 57,729.69 = 13,522.46 : x
  2. Step 2: Convert to fraction form
    38,480.69/57,729.69 = 13,522.46/x
  3. Step 3: Cross multiply
    38,480.69x = 57,729.69 × 13,522.46
  4. Step 4: Simplify right side
    38,480.69x = 780,647,568.16
  5. Step 5: Solve for x
    x = 780,647,568.16/38,480.69
  6. Step 6: Final answer
    x = 20,286.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.