Home / 20,227.20-30,324.60-8,530.80

Finding the Fourth Proportional to 20,227.20, 30,324.60 and 8,530.80

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Solution

The fourth proportional to 20,227.20, 30,324.60 and 8,530.80 is: 12,789.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,227.20 : 30,324.60 = 8,530.80 : x
  2. Step 2: Convert to fraction form
    20,227.20/30,324.60 = 8,530.80/x
  3. Step 3: Cross multiply
    20,227.20x = 30,324.60 × 8,530.80
  4. Step 4: Simplify right side
    20,227.20x = 258,693,097.68
  5. Step 5: Solve for x
    x = 258,693,097.68/20,227.20
  6. Step 6: Final answer
    x = 12,789.37

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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.