Home / 13,414.20-20,113.30-8,223.80

Finding the Fourth Proportional to 13,414.20, 20,113.30 and 8,223.80

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Solution

The fourth proportional to 13,414.20, 20,113.30 and 8,223.80 is: 12,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.20 : 20,113.30 = 8,223.80 : x
  2. Step 2: Convert to fraction form
    13,414.20/20,113.30 = 8,223.80/x
  3. Step 3: Cross multiply
    13,414.20x = 20,113.30 × 8,223.80
  4. Step 4: Simplify right side
    13,414.20x = 165,407,756.54
  5. Step 5: Solve for x
    x = 165,407,756.54/13,414.20
  6. Step 6: Final answer
    x = 12,330.80

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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.