Home / 20,057.72-27,679.28-11,105.01

Finding the Fourth Proportional to 20,057.72, 27,679.28 and 11,105.01

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Solution

The fourth proportional to 20,057.72, 27,679.28 and 11,105.01 is: 15,324.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.72 : 27,679.28 = 11,105.01 : x
  2. Step 2: Convert to fraction form
    20,057.72/27,679.28 = 11,105.01/x
  3. Step 3: Cross multiply
    20,057.72x = 27,679.28 × 11,105.01
  4. Step 4: Simplify right side
    20,057.72x = 307,378,625.67
  5. Step 5: Solve for x
    x = 307,378,625.67/20,057.72
  6. Step 6: Final answer
    x = 15,324.71

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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.