Home / 10,020.55-15,053.10-8,380.30

Finding the Fourth Proportional to 10,020.55, 15,053.10 and 8,380.30

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Solution

The fourth proportional to 10,020.55, 15,053.10 and 8,380.30 is: 12,589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020.55 : 15,053.10 = 8,380.30 : x
  2. Step 2: Convert to fraction form
    10,020.55/15,053.10 = 8,380.30/x
  3. Step 3: Cross multiply
    10,020.55x = 15,053.10 × 8,380.30
  4. Step 4: Simplify right side
    10,020.55x = 126,149,493.93
  5. Step 5: Solve for x
    x = 126,149,493.93/10,020.55
  6. Step 6: Final answer
    x = 12,589.08

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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.