Home / 12,152.20-18,228.30-3,387.73

Finding the Fourth Proportional to 12,152.20, 18,228.30 and 3,387.73

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Solution

The fourth proportional to 12,152.20, 18,228.30 and 3,387.73 is: 5,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,152.20 : 18,228.30 = 3,387.73 : x
  2. Step 2: Convert to fraction form
    12,152.20/18,228.30 = 3,387.73/x
  3. Step 3: Cross multiply
    12,152.20x = 18,228.30 × 3,387.73
  4. Step 4: Simplify right side
    12,152.20x = 61,752,558.76
  5. Step 5: Solve for x
    x = 61,752,558.76/12,152.20
  6. Step 6: Final answer
    x = 5,081.60

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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.