Home / 11,716.96-16,161.94-8,178.88

Finding the Fourth Proportional to 11,716.96, 16,161.94 and 8,178.88

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Solution

The fourth proportional to 11,716.96, 16,161.94 and 8,178.88 is: 11,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,716.96 : 16,161.94 = 8,178.88 : x
  2. Step 2: Convert to fraction form
    11,716.96/16,161.94 = 8,178.88/x
  3. Step 3: Cross multiply
    11,716.96x = 16,161.94 × 8,178.88
  4. Step 4: Simplify right side
    11,716.96x = 132,186,567.83
  5. Step 5: Solve for x
    x = 132,186,567.83/11,716.96
  6. Step 6: Final answer
    x = 11,281.64

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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.