Home / 20,115.26-27,757.72-11,162.20

Finding the Fourth Proportional to 20,115.26, 27,757.72 and 11,162.20

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Solution

The fourth proportional to 20,115.26, 27,757.72 and 11,162.20 is: 15,403.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.26 : 27,757.72 = 11,162.20 : x
  2. Step 2: Convert to fraction form
    20,115.26/27,757.72 = 11,162.20/x
  3. Step 3: Cross multiply
    20,115.26x = 27,757.72 × 11,162.20
  4. Step 4: Simplify right side
    20,115.26x = 309,837,222.18
  5. Step 5: Solve for x
    x = 309,837,222.18/20,115.26
  6. Step 6: Final answer
    x = 15,403.09

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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.