Home / 22,139.20-33,228.24-12,289.60

Finding the Fourth Proportional to 22,139.20, 33,228.24 and 12,289.60

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Solution

The fourth proportional to 22,139.20, 33,228.24 and 12,289.60 is: 18,445.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,139.20 : 33,228.24 = 12,289.60 : x
  2. Step 2: Convert to fraction form
    22,139.20/33,228.24 = 12,289.60/x
  3. Step 3: Cross multiply
    22,139.20x = 33,228.24 × 12,289.60
  4. Step 4: Simplify right side
    22,139.20x = 408,361,778.30
  5. Step 5: Solve for x
    x = 408,361,778.30/22,139.20
  6. Step 6: Final answer
    x = 18,445.19

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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.