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Finding the Fourth Proportional to 18,651.75, 27,977.62 and 6,965.88

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Solution

The fourth proportional to 18,651.75, 27,977.62 and 6,965.88 is: 10,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.75 : 27,977.62 = 6,965.88 : x
  2. Step 2: Convert to fraction form
    18,651.75/27,977.62 = 6,965.88/x
  3. Step 3: Cross multiply
    18,651.75x = 27,977.62 × 6,965.88
  4. Step 4: Simplify right side
    18,651.75x = 194,888,743.61
  5. Step 5: Solve for x
    x = 194,888,743.61/18,651.75
  6. Step 6: Final answer
    x = 10,448.82

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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.