Home / 16,871.89-25,310.26-5,186.09

Finding the Fourth Proportional to 16,871.89, 25,310.26 and 5,186.09

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Solution

The fourth proportional to 16,871.89, 25,310.26 and 5,186.09 is: 7,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,871.89 : 25,310.26 = 5,186.09 : x
  2. Step 2: Convert to fraction form
    16,871.89/25,310.26 = 5,186.09/x
  3. Step 3: Cross multiply
    16,871.89x = 25,310.26 × 5,186.09
  4. Step 4: Simplify right side
    16,871.89x = 131,261,260.35
  5. Step 5: Solve for x
    x = 131,261,260.35/16,871.89
  6. Step 6: Final answer
    x = 7,779.88

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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.