Home / 13,840.11-20,744.42-12,170.97

Finding the Fourth Proportional to 13,840.11, 20,744.42 and 12,170.97

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Solution

The fourth proportional to 13,840.11, 20,744.42 and 12,170.97 is: 18,242.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.11 : 20,744.42 = 12,170.97 : x
  2. Step 2: Convert to fraction form
    13,840.11/20,744.42 = 12,170.97/x
  3. Step 3: Cross multiply
    13,840.11x = 20,744.42 × 12,170.97
  4. Step 4: Simplify right side
    13,840.11x = 252,479,713.49
  5. Step 5: Solve for x
    x = 252,479,713.49/13,840.11
  6. Step 6: Final answer
    x = 18,242.62

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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.