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Finding the Fourth Proportional to 18,651.88, 27,977.82 and 6,168.55

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Solution

The fourth proportional to 18,651.88, 27,977.82 and 6,168.55 is: 9,252.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.88 : 27,977.82 = 6,168.55 : x
  2. Step 2: Convert to fraction form
    18,651.88/27,977.82 = 6,168.55/x
  3. Step 3: Cross multiply
    18,651.88x = 27,977.82 × 6,168.55
  4. Step 4: Simplify right side
    18,651.88x = 172,582,540.94
  5. Step 5: Solve for x
    x = 172,582,540.94/18,651.88
  6. Step 6: Final answer
    x = 9,252.82

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1.5x scale

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.