Home / 13,440.79-20,161.96-4,081.11

Finding the Fourth Proportional to 13,440.79, 20,161.96 and 4,081.11

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Solution

The fourth proportional to 13,440.79, 20,161.96 and 4,081.11 is: 6,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.79 : 20,161.96 = 4,081.11 : x
  2. Step 2: Convert to fraction form
    13,440.79/20,161.96 = 4,081.11/x
  3. Step 3: Cross multiply
    13,440.79x = 20,161.96 × 4,081.11
  4. Step 4: Simplify right side
    13,440.79x = 82,283,170.43
  5. Step 5: Solve for x
    x = 82,283,170.43/13,440.79
  6. Step 6: Final answer
    x = 6,121.90

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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.