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Finding the Fourth Proportional to 20,243.99, 27,937.01 and 11,292.19

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Solution

The fourth proportional to 20,243.99, 27,937.01 and 11,292.19 is: 15,583.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.99 : 27,937.01 = 11,292.19 : x
  2. Step 2: Convert to fraction form
    20,243.99/27,937.01 = 11,292.19/x
  3. Step 3: Cross multiply
    20,243.99x = 27,937.01 × 11,292.19
  4. Step 4: Simplify right side
    20,243.99x = 315,469,983.34
  5. Step 5: Solve for x
    x = 315,469,983.34/20,243.99
  6. Step 6: Final answer
    x = 15,583.39

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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.