Home / 20,121.56-27,763.62-11,167.16

Finding the Fourth Proportional to 20,121.56, 27,763.62 and 11,167.16

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Solution

The fourth proportional to 20,121.56, 27,763.62 and 11,167.16 is: 15,408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.56 : 27,763.62 = 11,167.16 : x
  2. Step 2: Convert to fraction form
    20,121.56/27,763.62 = 11,167.16/x
  3. Step 3: Cross multiply
    20,121.56x = 27,763.62 × 11,167.16
  4. Step 4: Simplify right side
    20,121.56x = 310,040,647.90
  5. Step 5: Solve for x
    x = 310,040,647.90/20,121.56
  6. Step 6: Final answer
    x = 15,408.38

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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.