Home / 20,279.33-27,986.27-11,781.35

Finding the Fourth Proportional to 20,279.33, 27,986.27 and 11,781.35

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Solution

The fourth proportional to 20,279.33, 27,986.27 and 11,781.35 is: 16,258.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.33 : 27,986.27 = 11,781.35 : x
  2. Step 2: Convert to fraction form
    20,279.33/27,986.27 = 11,781.35/x
  3. Step 3: Cross multiply
    20,279.33x = 27,986.27 × 11,781.35
  4. Step 4: Simplify right side
    20,279.33x = 329,715,843.23
  5. Step 5: Solve for x
    x = 329,715,843.23/20,279.33
  6. Step 6: Final answer
    x = 16,258.72

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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.