Home / 20,218.11-27,900.62-11,265.42

Finding the Fourth Proportional to 20,218.11, 27,900.62 and 11,265.42

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Solution

The fourth proportional to 20,218.11, 27,900.62 and 11,265.42 is: 15,546.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.11 : 27,900.62 = 11,265.42 : x
  2. Step 2: Convert to fraction form
    20,218.11/27,900.62 = 11,265.42/x
  3. Step 3: Cross multiply
    20,218.11x = 27,900.62 × 11,265.42
  4. Step 4: Simplify right side
    20,218.11x = 314,312,146.23
  5. Step 5: Solve for x
    x = 314,312,146.23/20,218.11
  6. Step 6: Final answer
    x = 15,546.07

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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.