Home / 20,255.79-27,954.39-11,305.04

Finding the Fourth Proportional to 20,255.79, 27,954.39 and 11,305.04

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Solution

The fourth proportional to 20,255.79, 27,954.39 and 11,305.04 is: 15,601.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.79 : 27,954.39 = 11,305.04 : x
  2. Step 2: Convert to fraction form
    20,255.79/27,954.39 = 11,305.04/x
  3. Step 3: Cross multiply
    20,255.79x = 27,954.39 × 11,305.04
  4. Step 4: Simplify right side
    20,255.79x = 316,025,367.95
  5. Step 5: Solve for x
    x = 316,025,367.95/20,255.79
  6. Step 6: Final answer
    x = 15,601.73

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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.