Home / 12,236.80-18,355.20-8,132.80

Finding the Fourth Proportional to 12,236.80, 18,355.20 and 8,132.80

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Solution

The fourth proportional to 12,236.80, 18,355.20 and 8,132.80 is: 12,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.80 : 18,355.20 = 8,132.80 : x
  2. Step 2: Convert to fraction form
    12,236.80/18,355.20 = 8,132.80/x
  3. Step 3: Cross multiply
    12,236.80x = 18,355.20 × 8,132.80
  4. Step 4: Simplify right side
    12,236.80x = 149,279,170.56
  5. Step 5: Solve for x
    x = 149,279,170.56/12,236.80
  6. Step 6: Final answer
    x = 12,199.20

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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.