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Finding the Fourth Proportional to 27,608.88, 41,351.01 and 12,786.66

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Solution

The fourth proportional to 27,608.88, 41,351.01 and 12,786.66 is: 19,151.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,608.88 : 41,351.01 = 12,786.66 : x
  2. Step 2: Convert to fraction form
    27,608.88/41,351.01 = 12,786.66/x
  3. Step 3: Cross multiply
    27,608.88x = 41,351.01 × 12,786.66
  4. Step 4: Simplify right side
    27,608.88x = 528,741,305.53
  5. Step 5: Solve for x
    x = 528,741,305.53/27,608.88
  6. Step 6: Final answer
    x = 19,151.13

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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.