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Finding the Fourth Proportional to 18,666, 27,999 and 7,722

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Solution

The fourth proportional to 18,666, 27,999 and 7,722 is: 11,583

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666 : 27,999 = 7,722 : x
  2. Step 2: Convert to fraction form
    18,666/27,999 = 7,722/x
  3. Step 3: Cross multiply
    18,666x = 27,999 × 7,722
  4. Step 4: Simplify right side
    18,666x = 216,208,278
  5. Step 5: Solve for x
    x = 216,208,278/18,666
  6. Step 6: Final answer
    x = 11,583

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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.