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Finding the Fourth Proportional to 18,672.27, 25,773.16 and 12,212.82

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Solution

The fourth proportional to 18,672.27, 25,773.16 and 12,212.82 is: 16,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.27 : 25,773.16 = 12,212.82 : x
  2. Step 2: Convert to fraction form
    18,672.27/25,773.16 = 12,212.82/x
  3. Step 3: Cross multiply
    18,672.27x = 25,773.16 × 12,212.82
  4. Step 4: Simplify right side
    18,672.27x = 314,762,963.91
  5. Step 5: Solve for x
    x = 314,762,963.91/18,672.27
  6. Step 6: Final answer
    x = 16,857.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.