Home / 12,519.72-18,778.14-3,286.44

Finding the Fourth Proportional to 12,519.72, 18,778.14 and 3,286.44

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Solution

The fourth proportional to 12,519.72, 18,778.14 and 3,286.44 is: 4,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.72 : 18,778.14 = 3,286.44 : x
  2. Step 2: Convert to fraction form
    12,519.72/18,778.14 = 3,286.44/x
  3. Step 3: Cross multiply
    12,519.72x = 18,778.14 × 3,286.44
  4. Step 4: Simplify right side
    12,519.72x = 61,713,230.42
  5. Step 5: Solve for x
    x = 61,713,230.42/12,519.72
  6. Step 6: Final answer
    x = 4,929.28

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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.