Home / 12,120.98-18,179.41-3,353.85

Finding the Fourth Proportional to 12,120.98, 18,179.41 and 3,353.85

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Solution

The fourth proportional to 12,120.98, 18,179.41 and 3,353.85 is: 5,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.98 : 18,179.41 = 3,353.85 : x
  2. Step 2: Convert to fraction form
    12,120.98/18,179.41 = 3,353.85/x
  3. Step 3: Cross multiply
    12,120.98x = 18,179.41 × 3,353.85
  4. Step 4: Simplify right side
    12,120.98x = 60,970,923.33
  5. Step 5: Solve for x
    x = 60,970,923.33/12,120.98
  6. Step 6: Final answer
    x = 5,030.20

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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.