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Finding the Fourth Proportional to 18,796.91, 28,195.33 and 8,264.42

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Solution

The fourth proportional to 18,796.91, 28,195.33 and 8,264.42 is: 12,396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.91 : 28,195.33 = 8,264.42 : x
  2. Step 2: Convert to fraction form
    18,796.91/28,195.33 = 8,264.42/x
  3. Step 3: Cross multiply
    18,796.91x = 28,195.33 × 8,264.42
  4. Step 4: Simplify right side
    18,796.91x = 233,018,049.16
  5. Step 5: Solve for x
    x = 233,018,049.16/18,796.91
  6. Step 6: Final answer
    x = 12,396.61

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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.