Home / 20,122.58-27,767.77-11,169.38

Finding the Fourth Proportional to 20,122.58, 27,767.77 and 11,169.38

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Solution

The fourth proportional to 20,122.58, 27,767.77 and 11,169.38 is: 15,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.58 : 27,767.77 = 11,169.38 : x
  2. Step 2: Convert to fraction form
    20,122.58/27,767.77 = 11,169.38/x
  3. Step 3: Cross multiply
    20,122.58x = 27,767.77 × 11,169.38
  4. Step 4: Simplify right side
    20,122.58x = 310,148,728.10
  5. Step 5: Solve for x
    x = 310,148,728.10/20,122.58
  6. Step 6: Final answer
    x = 15,412.97

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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.