Home / 11,161.28-16,752.72-8,208.80

Finding the Fourth Proportional to 11,161.28, 16,752.72 and 8,208.80

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Solution

The fourth proportional to 11,161.28, 16,752.72 and 8,208.80 is: 12,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.28 : 16,752.72 = 8,208.80 : x
  2. Step 2: Convert to fraction form
    11,161.28/16,752.72 = 8,208.80/x
  3. Step 3: Cross multiply
    11,161.28x = 16,752.72 × 8,208.80
  4. Step 4: Simplify right side
    11,161.28x = 137,519,727.94
  5. Step 5: Solve for x
    x = 137,519,727.94/11,161.28
  6. Step 6: Final answer
    x = 12,321.14

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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.