Home / 10,375.30-15,530.55-8,172.10

Finding the Fourth Proportional to 10,375.30, 15,530.55 and 8,172.10

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Solution

The fourth proportional to 10,375.30, 15,530.55 and 8,172.10 is: 12,232.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,375.30 : 15,530.55 = 8,172.10 : x
  2. Step 2: Convert to fraction form
    10,375.30/15,530.55 = 8,172.10/x
  3. Step 3: Cross multiply
    10,375.30x = 15,530.55 × 8,172.10
  4. Step 4: Simplify right side
    10,375.30x = 126,917,207.66
  5. Step 5: Solve for x
    x = 126,917,207.66/10,375.30
  6. Step 6: Final answer
    x = 12,232.63

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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.