Home / 10,269.20-15,380.21-6,520.71

Finding the Fourth Proportional to 10,269.20, 15,380.21 and 6,520.71

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Solution

The fourth proportional to 10,269.20, 15,380.21 and 6,520.71 is: 9,766.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,269.20 : 15,380.21 = 6,520.71 : x
  2. Step 2: Convert to fraction form
    10,269.20/15,380.21 = 6,520.71/x
  3. Step 3: Cross multiply
    10,269.20x = 15,380.21 × 6,520.71
  4. Step 4: Simplify right side
    10,269.20x = 100,289,905.45
  5. Step 5: Solve for x
    x = 100,289,905.45/10,269.20
  6. Step 6: Final answer
    x = 9,766.09

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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.