Home / 20,057.71-27,679.77-11,105.79

Finding the Fourth Proportional to 20,057.71, 27,679.77 and 11,105.79

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Solution

The fourth proportional to 20,057.71, 27,679.77 and 11,105.79 is: 15,326.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.71 : 27,679.77 = 11,105.79 : x
  2. Step 2: Convert to fraction form
    20,057.71/27,679.77 = 11,105.79/x
  3. Step 3: Cross multiply
    20,057.71x = 27,679.77 × 11,105.79
  4. Step 4: Simplify right side
    20,057.71x = 307,405,712.87
  5. Step 5: Solve for x
    x = 307,405,712.87/20,057.71
  6. Step 6: Final answer
    x = 15,326.06

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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.