Home / 25,540.80-38,311.28-7,771.64

Finding the Fourth Proportional to 25,540.80, 38,311.28 and 7,771.64

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Solution

The fourth proportional to 25,540.80, 38,311.28 and 7,771.64 is: 11,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,540.80 : 38,311.28 = 7,771.64 : x
  2. Step 2: Convert to fraction form
    25,540.80/38,311.28 = 7,771.64/x
  3. Step 3: Cross multiply
    25,540.80x = 38,311.28 × 7,771.64
  4. Step 4: Simplify right side
    25,540.80x = 297,741,245.68
  5. Step 5: Solve for x
    x = 297,741,245.68/25,540.80
  6. Step 6: Final answer
    x = 11,657.48

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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.