Home / 12,399.75-18,600.82-4,079.79

Finding the Fourth Proportional to 12,399.75, 18,600.82 and 4,079.79

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Solution

The fourth proportional to 12,399.75, 18,600.82 and 4,079.79 is: 6,120.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.75 : 18,600.82 = 4,079.79 : x
  2. Step 2: Convert to fraction form
    12,399.75/18,600.82 = 4,079.79/x
  3. Step 3: Cross multiply
    12,399.75x = 18,600.82 × 4,079.79
  4. Step 4: Simplify right side
    12,399.75x = 75,887,429.23
  5. Step 5: Solve for x
    x = 75,887,429.23/12,399.75
  6. Step 6: Final answer
    x = 6,120.08

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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.