Home / 20,105.79-27,747.26-11,609.48

Finding the Fourth Proportional to 20,105.79, 27,747.26 and 11,609.48

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Solution

The fourth proportional to 20,105.79, 27,747.26 and 11,609.48 is: 16,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.79 : 27,747.26 = 11,609.48 : x
  2. Step 2: Convert to fraction form
    20,105.79/27,747.26 = 11,609.48/x
  3. Step 3: Cross multiply
    20,105.79x = 27,747.26 × 11,609.48
  4. Step 4: Simplify right side
    20,105.79x = 322,131,063.24
  5. Step 5: Solve for x
    x = 322,131,063.24/20,105.79
  6. Step 6: Final answer
    x = 16,021.81

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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.