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Finding the Fourth Proportional to 17,218.16, 25,786.23 and 11,958.42

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Solution

The fourth proportional to 17,218.16, 25,786.23 and 11,958.42 is: 17,909.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,218.16 : 25,786.23 = 11,958.42 : x
  2. Step 2: Convert to fraction form
    17,218.16/25,786.23 = 11,958.42/x
  3. Step 3: Cross multiply
    17,218.16x = 25,786.23 × 11,958.42
  4. Step 4: Simplify right side
    17,218.16x = 308,362,568.56
  5. Step 5: Solve for x
    x = 308,362,568.56/17,218.16
  6. Step 6: Final answer
    x = 17,909.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.