Home / 28,067.83-38,734.55-15,321.77

Finding the Fourth Proportional to 28,067.83, 38,734.55 and 15,321.77

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Solution

The fourth proportional to 28,067.83, 38,734.55 and 15,321.77 is: 21,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.83 : 38,734.55 = 15,321.77 : x
  2. Step 2: Convert to fraction form
    28,067.83/38,734.55 = 15,321.77/x
  3. Step 3: Cross multiply
    28,067.83x = 38,734.55 × 15,321.77
  4. Step 4: Simplify right side
    28,067.83x = 593,481,595.87
  5. Step 5: Solve for x
    x = 593,481,595.87/28,067.83
  6. Step 6: Final answer
    x = 21,144.55

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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.