Home / 12,150.88-18,219.12-4,249.60

Finding the Fourth Proportional to 12,150.88, 18,219.12 and 4,249.60

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Solution

The fourth proportional to 12,150.88, 18,219.12 and 4,249.60 is: 6,371.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.88 : 18,219.12 = 4,249.60 : x
  2. Step 2: Convert to fraction form
    12,150.88/18,219.12 = 4,249.60/x
  3. Step 3: Cross multiply
    12,150.88x = 18,219.12 × 4,249.60
  4. Step 4: Simplify right side
    12,150.88x = 77,423,972.35
  5. Step 5: Solve for x
    x = 77,423,972.35/12,150.88
  6. Step 6: Final answer
    x = 6,371.88

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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.