Home / 11,379.10-17,105.10-8,114.80

Finding the Fourth Proportional to 11,379.10, 17,105.10 and 8,114.80

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Solution

The fourth proportional to 11,379.10, 17,105.10 and 8,114.80 is: 12,198.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.10 : 17,105.10 = 8,114.80 : x
  2. Step 2: Convert to fraction form
    11,379.10/17,105.10 = 8,114.80/x
  3. Step 3: Cross multiply
    11,379.10x = 17,105.10 × 8,114.80
  4. Step 4: Simplify right side
    11,379.10x = 138,804,465.48
  5. Step 5: Solve for x
    x = 138,804,465.48/11,379.10
  6. Step 6: Final answer
    x = 12,198.19

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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.