Home / 20,218.09-27,900.68-11,265.97

Finding the Fourth Proportional to 20,218.09, 27,900.68 and 11,265.97

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Solution

The fourth proportional to 20,218.09, 27,900.68 and 11,265.97 is: 15,546.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.09 : 27,900.68 = 11,265.97 : x
  2. Step 2: Convert to fraction form
    20,218.09/27,900.68 = 11,265.97/x
  3. Step 3: Cross multiply
    20,218.09x = 27,900.68 × 11,265.97
  4. Step 4: Simplify right side
    20,218.09x = 314,328,028.03
  5. Step 5: Solve for x
    x = 314,328,028.03/20,218.09
  6. Step 6: Final answer
    x = 15,546.87

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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.