Home / 10,371.85-15,539.55-8,512.90

Finding the Fourth Proportional to 10,371.85, 15,539.55 and 8,512.90

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Solution

The fourth proportional to 10,371.85, 15,539.55 and 8,512.90 is: 12,754.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,371.85 : 15,539.55 = 8,512.90 : x
  2. Step 2: Convert to fraction form
    10,371.85/15,539.55 = 8,512.90/x
  3. Step 3: Cross multiply
    10,371.85x = 15,539.55 × 8,512.90
  4. Step 4: Simplify right side
    10,371.85x = 132,286,635.20
  5. Step 5: Solve for x
    x = 132,286,635.20/10,371.85
  6. Step 6: Final answer
    x = 12,754.39

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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.