Home / 11,945.13-17,918.43-3,179.85

Finding the Fourth Proportional to 11,945.13, 17,918.43 and 3,179.85

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Solution

The fourth proportional to 11,945.13, 17,918.43 and 3,179.85 is: 4,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.13 : 17,918.43 = 3,179.85 : x
  2. Step 2: Convert to fraction form
    11,945.13/17,918.43 = 3,179.85/x
  3. Step 3: Cross multiply
    11,945.13x = 17,918.43 × 3,179.85
  4. Step 4: Simplify right side
    11,945.13x = 56,977,919.64
  5. Step 5: Solve for x
    x = 56,977,919.64/11,945.13
  6. Step 6: Final answer
    x = 4,769.97

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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.