Home / 20,105.62-27,749.69-11,613.22

Finding the Fourth Proportional to 20,105.62, 27,749.69 and 11,613.22

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Solution

The fourth proportional to 20,105.62, 27,749.69 and 11,613.22 is: 16,028.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.62 : 27,749.69 = 11,613.22 : x
  2. Step 2: Convert to fraction form
    20,105.62/27,749.69 = 11,613.22/x
  3. Step 3: Cross multiply
    20,105.62x = 27,749.69 × 11,613.22
  4. Step 4: Simplify right side
    20,105.62x = 322,263,327.10
  5. Step 5: Solve for x
    x = 322,263,327.10/20,105.62
  6. Step 6: Final answer
    x = 16,028.52

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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.