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Finding the Fourth Proportional to 19,636.31, 27,104.78 and 12,082.95

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Solution

The fourth proportional to 19,636.31, 27,104.78 and 12,082.95 is: 16,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.31 : 27,104.78 = 12,082.95 : x
  2. Step 2: Convert to fraction form
    19,636.31/27,104.78 = 12,082.95/x
  3. Step 3: Cross multiply
    19,636.31x = 27,104.78 × 12,082.95
  4. Step 4: Simplify right side
    19,636.31x = 327,505,641.09
  5. Step 5: Solve for x
    x = 327,505,641.09/19,636.31
  6. Step 6: Final answer
    x = 16,678.58

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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.