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Finding the Fourth Proportional to 14,844.97, 20,486.16 and 8,131.21

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Solution

The fourth proportional to 14,844.97, 20,486.16 and 8,131.21 is: 11,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,844.97 : 20,486.16 = 8,131.21 : x
  2. Step 2: Convert to fraction form
    14,844.97/20,486.16 = 8,131.21/x
  3. Step 3: Cross multiply
    14,844.97x = 20,486.16 × 8,131.21
  4. Step 4: Simplify right side
    14,844.97x = 166,577,269.05
  5. Step 5: Solve for x
    x = 166,577,269.05/14,844.97
  6. Step 6: Final answer
    x = 11,221.13

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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.