Home / 12,227.60-18,298.20-8,512.40

Finding the Fourth Proportional to 12,227.60, 18,298.20 and 8,512.40

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Solution

The fourth proportional to 12,227.60, 18,298.20 and 8,512.40 is: 12,738.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,227.60 : 18,298.20 = 8,512.40 : x
  2. Step 2: Convert to fraction form
    12,227.60/18,298.20 = 8,512.40/x
  3. Step 3: Cross multiply
    12,227.60x = 18,298.20 × 8,512.40
  4. Step 4: Simplify right side
    12,227.60x = 155,761,597.68
  5. Step 5: Solve for x
    x = 155,761,597.68/12,227.60
  6. Step 6: Final answer
    x = 12,738.53

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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.