Home / 8,143.20-12,219.66-6,694.92

Finding the Fourth Proportional to 8,143.20, 12,219.66 and 6,694.92

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Solution

The fourth proportional to 8,143.20, 12,219.66 and 6,694.92 is: 10,046.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.20 : 12,219.66 = 6,694.92 : x
  2. Step 2: Convert to fraction form
    8,143.20/12,219.66 = 6,694.92/x
  3. Step 3: Cross multiply
    8,143.20x = 12,219.66 × 6,694.92
  4. Step 4: Simplify right side
    8,143.20x = 81,809,646.13
  5. Step 5: Solve for x
    x = 81,809,646.13/8,143.20
  6. Step 6: Final answer
    x = 10,046.38

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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.