Home / 20,122.10-27,768.29-11,169.37

Finding the Fourth Proportional to 20,122.10, 27,768.29 and 11,169.37

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Solution

The fourth proportional to 20,122.10, 27,768.29 and 11,169.37 is: 15,413.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.10 : 27,768.29 = 11,169.37 : x
  2. Step 2: Convert to fraction form
    20,122.10/27,768.29 = 11,169.37/x
  3. Step 3: Cross multiply
    20,122.10x = 27,768.29 × 11,169.37
  4. Step 4: Simplify right side
    20,122.10x = 310,154,180.01
  5. Step 5: Solve for x
    x = 310,154,180.01/20,122.10
  6. Step 6: Final answer
    x = 15,413.61

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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.