Home / 20,142.12-30,179.06-12,334.62

Finding the Fourth Proportional to 20,142.12, 30,179.06 and 12,334.62

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Solution

The fourth proportional to 20,142.12, 30,179.06 and 12,334.62 is: 18,481.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.12 : 30,179.06 = 12,334.62 : x
  2. Step 2: Convert to fraction form
    20,142.12/30,179.06 = 12,334.62/x
  3. Step 3: Cross multiply
    20,142.12x = 30,179.06 × 12,334.62
  4. Step 4: Simplify right side
    20,142.12x = 372,247,237.06
  5. Step 5: Solve for x
    x = 372,247,237.06/20,142.12
  6. Step 6: Final answer
    x = 18,481.04

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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.