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Finding the Fourth Proportional to 17,118.65, 25,682.13 and 5,431.97

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Solution

The fourth proportional to 17,118.65, 25,682.13 and 5,431.97 is: 8,149.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,118.65 : 25,682.13 = 5,431.97 : x
  2. Step 2: Convert to fraction form
    17,118.65/25,682.13 = 5,431.97/x
  3. Step 3: Cross multiply
    17,118.65x = 25,682.13 × 5,431.97
  4. Step 4: Simplify right side
    17,118.65x = 139,504,623.90
  5. Step 5: Solve for x
    x = 139,504,623.90/17,118.65
  6. Step 6: Final answer
    x = 8,149.28

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1.5x scale

Why These Related Problems?

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