Home / 25,540.53-38,278.35-11,485.55

Finding the Fourth Proportional to 25,540.53, 38,278.35 and 11,485.55

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Solution

The fourth proportional to 25,540.53, 38,278.35 and 11,485.55 is: 17,213.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,540.53 : 38,278.35 = 11,485.55 : x
  2. Step 2: Convert to fraction form
    25,540.53/38,278.35 = 11,485.55/x
  3. Step 3: Cross multiply
    25,540.53x = 38,278.35 × 11,485.55
  4. Step 4: Simplify right side
    25,540.53x = 439,647,711.45
  5. Step 5: Solve for x
    x = 439,647,711.45/25,540.53
  6. Step 6: Final answer
    x = 17,213.73

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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.