Home / 28,067.35-38,733.75-15,321.33

Finding the Fourth Proportional to 28,067.35, 38,733.75 and 15,321.33

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Solution

The fourth proportional to 28,067.35, 38,733.75 and 15,321.33 is: 21,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.35 : 38,733.75 = 15,321.33 : x
  2. Step 2: Convert to fraction form
    28,067.35/38,733.75 = 15,321.33/x
  3. Step 3: Cross multiply
    28,067.35x = 38,733.75 × 15,321.33
  4. Step 4: Simplify right side
    28,067.35x = 593,452,420.64
  5. Step 5: Solve for x
    x = 593,452,420.64/28,067.35
  6. Step 6: Final answer
    x = 21,143.87

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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.