Home / 16,872.89-25,311.76-5,187.09

Finding the Fourth Proportional to 16,872.89, 25,311.76 and 5,187.09

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Solution

The fourth proportional to 16,872.89, 25,311.76 and 5,187.09 is: 7,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,872.89 : 25,311.76 = 5,187.09 : x
  2. Step 2: Convert to fraction form
    16,872.89/25,311.76 = 5,187.09/x
  3. Step 3: Cross multiply
    16,872.89x = 25,311.76 × 5,187.09
  4. Step 4: Simplify right side
    16,872.89x = 131,294,377.18
  5. Step 5: Solve for x
    x = 131,294,377.18/16,872.89
  6. Step 6: Final answer
    x = 7,781.38

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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.