Home / 10,540.30-15,811.35-3,144.28

Finding the Fourth Proportional to 10,540.30, 15,811.35 and 3,144.28

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Solution

The fourth proportional to 10,540.30, 15,811.35 and 3,144.28 is: 4,716.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,540.30 : 15,811.35 = 3,144.28 : x
  2. Step 2: Convert to fraction form
    10,540.30/15,811.35 = 3,144.28/x
  3. Step 3: Cross multiply
    10,540.30x = 15,811.35 × 3,144.28
  4. Step 4: Simplify right side
    10,540.30x = 49,715,311.58
  5. Step 5: Solve for x
    x = 49,715,311.58/10,540.30
  6. Step 6: Final answer
    x = 4,716.69

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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.