Home / 13,612.32-20,399.58-6,198.66

Finding the Fourth Proportional to 13,612.32, 20,399.58 and 6,198.66

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Solution

The fourth proportional to 13,612.32, 20,399.58 and 6,198.66 is: 9,289.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.32 : 20,399.58 = 6,198.66 : x
  2. Step 2: Convert to fraction form
    13,612.32/20,399.58 = 6,198.66/x
  3. Step 3: Cross multiply
    13,612.32x = 20,399.58 × 6,198.66
  4. Step 4: Simplify right side
    13,612.32x = 126,450,060.56
  5. Step 5: Solve for x
    x = 126,450,060.56/13,612.32
  6. Step 6: Final answer
    x = 9,289.38

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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.