Home / 12,083.08-18,121.14-3,318.28

Finding the Fourth Proportional to 12,083.08, 18,121.14 and 3,318.28

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Solution

The fourth proportional to 12,083.08, 18,121.14 and 3,318.28 is: 4,976.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083.08 : 18,121.14 = 3,318.28 : x
  2. Step 2: Convert to fraction form
    12,083.08/18,121.14 = 3,318.28/x
  3. Step 3: Cross multiply
    12,083.08x = 18,121.14 × 3,318.28
  4. Step 4: Simplify right side
    12,083.08x = 60,131,016.44
  5. Step 5: Solve for x
    x = 60,131,016.44/12,083.08
  6. Step 6: Final answer
    x = 4,976.46

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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.