Home / 11,179.38-16,771.11-9,117.66

Finding the Fourth Proportional to 11,179.38, 16,771.11 and 9,117.66

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Solution

The fourth proportional to 11,179.38, 16,771.11 and 9,117.66 is: 13,678.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.38 : 16,771.11 = 9,117.66 : x
  2. Step 2: Convert to fraction form
    11,179.38/16,771.11 = 9,117.66/x
  3. Step 3: Cross multiply
    11,179.38x = 16,771.11 × 9,117.66
  4. Step 4: Simplify right side
    11,179.38x = 152,913,278.80
  5. Step 5: Solve for x
    x = 152,913,278.80/11,179.38
  6. Step 6: Final answer
    x = 13,678.15

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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.