Home / 20,261.25-27,963.77-11,877.75

Finding the Fourth Proportional to 20,261.25, 27,963.77 and 11,877.75

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Solution

The fourth proportional to 20,261.25, 27,963.77 and 11,877.75 is: 16,393.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.25 : 27,963.77 = 11,877.75 : x
  2. Step 2: Convert to fraction form
    20,261.25/27,963.77 = 11,877.75/x
  3. Step 3: Cross multiply
    20,261.25x = 27,963.77 × 11,877.75
  4. Step 4: Simplify right side
    20,261.25x = 332,146,609.73
  5. Step 5: Solve for x
    x = 332,146,609.73/20,261.25
  6. Step 6: Final answer
    x = 16,393.19

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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.