Home / 10,207.35-15,319.22-5,278.43

Finding the Fourth Proportional to 10,207.35, 15,319.22 and 5,278.43

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Solution

The fourth proportional to 10,207.35, 15,319.22 and 5,278.43 is: 7,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,207.35 : 15,319.22 = 5,278.43 : x
  2. Step 2: Convert to fraction form
    10,207.35/15,319.22 = 5,278.43/x
  3. Step 3: Cross multiply
    10,207.35x = 15,319.22 × 5,278.43
  4. Step 4: Simplify right side
    10,207.35x = 80,861,327.44
  5. Step 5: Solve for x
    x = 80,861,327.44/10,207.35
  6. Step 6: Final answer
    x = 7,921.87

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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.