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Finding the Fourth Proportional to 17,992.91, 26,991.17 and 5,512.79

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Solution

The fourth proportional to 17,992.91, 26,991.17 and 5,512.79 is: 8,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,992.91 : 26,991.17 = 5,512.79 : x
  2. Step 2: Convert to fraction form
    17,992.91/26,991.17 = 5,512.79/x
  3. Step 3: Cross multiply
    17,992.91x = 26,991.17 × 5,512.79
  4. Step 4: Simplify right side
    17,992.91x = 148,796,489.54
  5. Step 5: Solve for x
    x = 148,796,489.54/17,992.91
  6. Step 6: Final answer
    x = 8,269.73

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1.5x scale

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.