Home / 10,375.20-15,546.60-8,722.80

Finding the Fourth Proportional to 10,375.20, 15,546.60 and 8,722.80

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Solution

The fourth proportional to 10,375.20, 15,546.60 and 8,722.80 is: 13,070.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,375.20 : 15,546.60 = 8,722.80 : x
  2. Step 2: Convert to fraction form
    10,375.20/15,546.60 = 8,722.80/x
  3. Step 3: Cross multiply
    10,375.20x = 15,546.60 × 8,722.80
  4. Step 4: Simplify right side
    10,375.20x = 135,609,882.48
  5. Step 5: Solve for x
    x = 135,609,882.48/10,375.20
  6. Step 6: Final answer
    x = 13,070.58

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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.