Home / 16,868.10-25,302.15-5,181.30

Finding the Fourth Proportional to 16,868.10, 25,302.15 and 5,181.30

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Solution

The fourth proportional to 16,868.10, 25,302.15 and 5,181.30 is: 7,771.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,868.10 : 25,302.15 = 5,181.30 : x
  2. Step 2: Convert to fraction form
    16,868.10/25,302.15 = 5,181.30/x
  3. Step 3: Cross multiply
    16,868.10x = 25,302.15 × 5,181.30
  4. Step 4: Simplify right side
    16,868.10x = 131,098,029.80
  5. Step 5: Solve for x
    x = 131,098,029.80/16,868.10
  6. Step 6: Final answer
    x = 7,771.95

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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.