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Finding the Fourth Proportional to 19,744.76, 27,245.13 and 12,680.75

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Solution

The fourth proportional to 19,744.76, 27,245.13 and 12,680.75 is: 17,497.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,744.76 : 27,245.13 = 12,680.75 : x
  2. Step 2: Convert to fraction form
    19,744.76/27,245.13 = 12,680.75/x
  3. Step 3: Cross multiply
    19,744.76x = 27,245.13 × 12,680.75
  4. Step 4: Simplify right side
    19,744.76x = 345,488,546.02
  5. Step 5: Solve for x
    x = 345,488,546.02/19,744.76
  6. Step 6: Final answer
    x = 17,497.74

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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.