Home / 12,149.32-18,222-3,382.24

Finding the Fourth Proportional to 12,149.32, 18,222 and 3,382.24

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Solution

The fourth proportional to 12,149.32, 18,222 and 3,382.24 is: 5,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.32 : 18,222 = 3,382.24 : x
  2. Step 2: Convert to fraction form
    12,149.32/18,222 = 3,382.24/x
  3. Step 3: Cross multiply
    12,149.32x = 18,222 × 3,382.24
  4. Step 4: Simplify right side
    12,149.32x = 61,631,177.28
  5. Step 5: Solve for x
    x = 61,631,177.28/12,149.32
  6. Step 6: Final answer
    x = 5,072.81

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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.