Home / 11,979.57-17,971.53-4,081.68

Finding the Fourth Proportional to 11,979.57, 17,971.53 and 4,081.68

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Solution

The fourth proportional to 11,979.57, 17,971.53 and 4,081.68 is: 6,123.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.57 : 17,971.53 = 4,081.68 : x
  2. Step 2: Convert to fraction form
    11,979.57/17,971.53 = 4,081.68/x
  3. Step 3: Cross multiply
    11,979.57x = 17,971.53 × 4,081.68
  4. Step 4: Simplify right side
    11,979.57x = 73,354,034.57
  5. Step 5: Solve for x
    x = 73,354,034.57/11,979.57
  6. Step 6: Final answer
    x = 6,123.26

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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.