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Finding the Fourth Proportional to 18,634.56, 27,951.48 and 7,540.80

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Solution

The fourth proportional to 18,634.56, 27,951.48 and 7,540.80 is: 11,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.56 : 27,951.48 = 7,540.80 : x
  2. Step 2: Convert to fraction form
    18,634.56/27,951.48 = 7,540.80/x
  3. Step 3: Cross multiply
    18,634.56x = 27,951.48 × 7,540.80
  4. Step 4: Simplify right side
    18,634.56x = 210,776,520.38
  5. Step 5: Solve for x
    x = 210,776,520.38/18,634.56
  6. Step 6: Final answer
    x = 11,311.05

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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.