Home / 10,449.20-15,665.60-5,449.34

Finding the Fourth Proportional to 10,449.20, 15,665.60 and 5,449.34

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Solution

The fourth proportional to 10,449.20, 15,665.60 and 5,449.34 is: 8,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,449.20 : 15,665.60 = 5,449.34 : x
  2. Step 2: Convert to fraction form
    10,449.20/15,665.60 = 5,449.34/x
  3. Step 3: Cross multiply
    10,449.20x = 15,665.60 × 5,449.34
  4. Step 4: Simplify right side
    10,449.20x = 85,367,233.49
  5. Step 5: Solve for x
    x = 85,367,233.49/10,449.20
  6. Step 6: Final answer
    x = 8,169.74

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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.