Home / 20,122.08-27,765.52-11,169.66

Finding the Fourth Proportional to 20,122.08, 27,765.52 and 11,169.66

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Solution

The fourth proportional to 20,122.08, 27,765.52 and 11,169.66 is: 15,412.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.08 : 27,765.52 = 11,169.66 : x
  2. Step 2: Convert to fraction form
    20,122.08/27,765.52 = 11,169.66/x
  3. Step 3: Cross multiply
    20,122.08x = 27,765.52 × 11,169.66
  4. Step 4: Simplify right side
    20,122.08x = 310,131,418.12
  5. Step 5: Solve for x
    x = 310,131,418.12/20,122.08
  6. Step 6: Final answer
    x = 15,412.49

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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.