Home / 11,982.87-16,520.22-8,392.97

Finding the Fourth Proportional to 11,982.87, 16,520.22 and 8,392.97

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Solution

The fourth proportional to 11,982.87, 16,520.22 and 8,392.97 is: 11,571.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.87 : 16,520.22 = 8,392.97 : x
  2. Step 2: Convert to fraction form
    11,982.87/16,520.22 = 8,392.97/x
  3. Step 3: Cross multiply
    11,982.87x = 16,520.22 × 8,392.97
  4. Step 4: Simplify right side
    11,982.87x = 138,653,752.15
  5. Step 5: Solve for x
    x = 138,653,752.15/11,982.87
  6. Step 6: Final answer
    x = 11,571.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.