Home / 20,112.38-27,750.62-11,612.66

Finding the Fourth Proportional to 20,112.38, 27,750.62 and 11,612.66

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Solution

The fourth proportional to 20,112.38, 27,750.62 and 11,612.66 is: 16,022.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.38 : 27,750.62 = 11,612.66 : x
  2. Step 2: Convert to fraction form
    20,112.38/27,750.62 = 11,612.66/x
  3. Step 3: Cross multiply
    20,112.38x = 27,750.62 × 11,612.66
  4. Step 4: Simplify right side
    20,112.38x = 322,258,514.85
  5. Step 5: Solve for x
    x = 322,258,514.85/20,112.38
  6. Step 6: Final answer
    x = 16,022.89

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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.