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Finding the Fourth Proportional to 18,614, 27,921 and 4,763

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Solution

The fourth proportional to 18,614, 27,921 and 4,763 is: 7,144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614 : 27,921 = 4,763 : x
  2. Step 2: Convert to fraction form
    18,614/27,921 = 4,763/x
  3. Step 3: Cross multiply
    18,614x = 27,921 × 4,763
  4. Step 4: Simplify right side
    18,614x = 132,987,723
  5. Step 5: Solve for x
    x = 132,987,723/18,614
  6. Step 6: Final answer
    x = 7,144.50

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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.