Home / 11,144.31-15,379.11-6,668.06

Finding the Fourth Proportional to 11,144.31, 15,379.11 and 6,668.06

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Solution

The fourth proportional to 11,144.31, 15,379.11 and 6,668.06 is: 9,201.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.31 : 15,379.11 = 6,668.06 : x
  2. Step 2: Convert to fraction form
    11,144.31/15,379.11 = 6,668.06/x
  3. Step 3: Cross multiply
    11,144.31x = 15,379.11 × 6,668.06
  4. Step 4: Simplify right side
    11,144.31x = 102,548,751.33
  5. Step 5: Solve for x
    x = 102,548,751.33/11,144.31
  6. Step 6: Final answer
    x = 9,201.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.