Home / 20,057.21-27,679.08-11,105.29

Finding the Fourth Proportional to 20,057.21, 27,679.08 and 11,105.29

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Solution

The fourth proportional to 20,057.21, 27,679.08 and 11,105.29 is: 15,325.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.21 : 27,679.08 = 11,105.29 : x
  2. Step 2: Convert to fraction form
    20,057.21/27,679.08 = 11,105.29/x
  3. Step 3: Cross multiply
    20,057.21x = 27,679.08 × 11,105.29
  4. Step 4: Simplify right side
    20,057.21x = 307,384,210.33
  5. Step 5: Solve for x
    x = 307,384,210.33/20,057.21
  6. Step 6: Final answer
    x = 15,325.37

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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.