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Finding the Fourth Proportional to 18,662.80, 25,754.44 and 10,279.12

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Solution

The fourth proportional to 18,662.80, 25,754.44 and 10,279.12 is: 14,185.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.80 : 25,754.44 = 10,279.12 : x
  2. Step 2: Convert to fraction form
    18,662.80/25,754.44 = 10,279.12/x
  3. Step 3: Cross multiply
    18,662.80x = 25,754.44 × 10,279.12
  4. Step 4: Simplify right side
    18,662.80x = 264,732,979.29
  5. Step 5: Solve for x
    x = 264,732,979.29/18,662.80
  6. Step 6: Final answer
    x = 14,185.06

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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.