Home / 11,982.81-17,961.97-4,185.21

Finding the Fourth Proportional to 11,982.81, 17,961.97 and 4,185.21

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Solution

The fourth proportional to 11,982.81, 17,961.97 and 4,185.21 is: 6,273.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.81 : 17,961.97 = 4,185.21 : x
  2. Step 2: Convert to fraction form
    11,982.81/17,961.97 = 4,185.21/x
  3. Step 3: Cross multiply
    11,982.81x = 17,961.97 × 4,185.21
  4. Step 4: Simplify right side
    11,982.81x = 75,174,616.46
  5. Step 5: Solve for x
    x = 75,174,616.46/11,982.81
  6. Step 6: Final answer
    x = 6,273.54

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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.