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Finding the Fourth Proportional to 18,174.66, 27,245.82 and 7,078.76

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Solution

The fourth proportional to 18,174.66, 27,245.82 and 7,078.76 is: 10,611.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,174.66 : 27,245.82 = 7,078.76 : x
  2. Step 2: Convert to fraction form
    18,174.66/27,245.82 = 7,078.76/x
  3. Step 3: Cross multiply
    18,174.66x = 27,245.82 × 7,078.76
  4. Step 4: Simplify right side
    18,174.66x = 192,866,620.78
  5. Step 5: Solve for x
    x = 192,866,620.78/18,174.66
  6. Step 6: Final answer
    x = 10,611.84

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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.