Home / 20,217.12-30,324.60-5,425.80

Finding the Fourth Proportional to 20,217.12, 30,324.60 and 5,425.80

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Solution

The fourth proportional to 20,217.12, 30,324.60 and 5,425.80 is: 8,138.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.12 : 30,324.60 = 5,425.80 : x
  2. Step 2: Convert to fraction form
    20,217.12/30,324.60 = 5,425.80/x
  3. Step 3: Cross multiply
    20,217.12x = 30,324.60 × 5,425.80
  4. Step 4: Simplify right side
    20,217.12x = 164,535,214.68
  5. Step 5: Solve for x
    x = 164,535,214.68/20,217.12
  6. Step 6: Final answer
    x = 8,138.41

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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.