Home / 12,081.12-18,121.92-3,316.26

Finding the Fourth Proportional to 12,081.12, 18,121.92 and 3,316.26

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Solution

The fourth proportional to 12,081.12, 18,121.92 and 3,316.26 is: 4,974.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.12 : 18,121.92 = 3,316.26 : x
  2. Step 2: Convert to fraction form
    12,081.12/18,121.92 = 3,316.26/x
  3. Step 3: Cross multiply
    12,081.12x = 18,121.92 × 3,316.26
  4. Step 4: Simplify right side
    12,081.12x = 60,096,998.42
  5. Step 5: Solve for x
    x = 60,096,998.42/12,081.12
  6. Step 6: Final answer
    x = 4,974.46

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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.