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Finding the Fourth Proportional to 20,001, 27,601.38 and 11,169

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Solution

The fourth proportional to 20,001, 27,601.38 and 11,169 is: 15,413.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001 : 27,601.38 = 11,169 : x
  2. Step 2: Convert to fraction form
    20,001/27,601.38 = 11,169/x
  3. Step 3: Cross multiply
    20,001x = 27,601.38 × 11,169
  4. Step 4: Simplify right side
    20,001x = 308,279,813.22
  5. Step 5: Solve for x
    x = 308,279,813.22/20,001
  6. Step 6: Final answer
    x = 15,413.22

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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.