Home / 20,144.48-27,789.68-11,756

Finding the Fourth Proportional to 20,144.48, 27,789.68 and 11,756

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Solution

The fourth proportional to 20,144.48, 27,789.68 and 11,756 is: 16,217.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.48 : 27,789.68 = 11,756 : x
  2. Step 2: Convert to fraction form
    20,144.48/27,789.68 = 11,756/x
  3. Step 3: Cross multiply
    20,144.48x = 27,789.68 × 11,756
  4. Step 4: Simplify right side
    20,144.48x = 326,695,478.08
  5. Step 5: Solve for x
    x = 326,695,478.08/20,144.48
  6. Step 6: Final answer
    x = 16,217.62

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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.