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Finding the Fourth Proportional to 18,390.27, 27,566.26 and 8,521.44

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Solution

The fourth proportional to 18,390.27, 27,566.26 and 8,521.44 is: 12,773.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.27 : 27,566.26 = 8,521.44 : x
  2. Step 2: Convert to fraction form
    18,390.27/27,566.26 = 8,521.44/x
  3. Step 3: Cross multiply
    18,390.27x = 27,566.26 × 8,521.44
  4. Step 4: Simplify right side
    18,390.27x = 234,904,105.94
  5. Step 5: Solve for x
    x = 234,904,105.94/18,390.27
  6. Step 6: Final answer
    x = 12,773.28

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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.