Home / 28,067.96-38,734.26-15,321.80

Finding the Fourth Proportional to 28,067.96, 38,734.26 and 15,321.80

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Solution

The fourth proportional to 28,067.96, 38,734.26 and 15,321.80 is: 21,144.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.96 : 38,734.26 = 15,321.80 : x
  2. Step 2: Convert to fraction form
    28,067.96/38,734.26 = 15,321.80/x
  3. Step 3: Cross multiply
    28,067.96x = 38,734.26 × 15,321.80
  4. Step 4: Simplify right side
    28,067.96x = 593,478,584.87
  5. Step 5: Solve for x
    x = 593,478,584.87/28,067.96
  6. Step 6: Final answer
    x = 21,144.34

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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.