Home / 11,918.80-17,867.24-4,122.12

Finding the Fourth Proportional to 11,918.80, 17,867.24 and 4,122.12

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Solution

The fourth proportional to 11,918.80, 17,867.24 and 4,122.12 is: 6,179.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.80 : 17,867.24 = 4,122.12 : x
  2. Step 2: Convert to fraction form
    11,918.80/17,867.24 = 4,122.12/x
  3. Step 3: Cross multiply
    11,918.80x = 17,867.24 × 4,122.12
  4. Step 4: Simplify right side
    11,918.80x = 73,650,907.35
  5. Step 5: Solve for x
    x = 73,650,907.35/11,918.80
  6. Step 6: Final answer
    x = 6,179.39

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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.