Home / 12,138.12-18,207.42-3,373.06

Finding the Fourth Proportional to 12,138.12, 18,207.42 and 3,373.06

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Solution

The fourth proportional to 12,138.12, 18,207.42 and 3,373.06 is: 5,059.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.12 : 18,207.42 = 3,373.06 : x
  2. Step 2: Convert to fraction form
    12,138.12/18,207.42 = 3,373.06/x
  3. Step 3: Cross multiply
    12,138.12x = 18,207.42 × 3,373.06
  4. Step 4: Simplify right side
    12,138.12x = 61,414,720.11
  5. Step 5: Solve for x
    x = 61,414,720.11/12,138.12
  6. Step 6: Final answer
    x = 5,059.66

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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.