Home / 28,556.75-42,786.38-20,222.92

Finding the Fourth Proportional to 28,556.75, 42,786.38 and 20,222.92

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Solution

The fourth proportional to 28,556.75, 42,786.38 and 20,222.92 is: 30,299.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.75 : 42,786.38 = 20,222.92 : x
  2. Step 2: Convert to fraction form
    28,556.75/42,786.38 = 20,222.92/x
  3. Step 3: Cross multiply
    28,556.75x = 42,786.38 × 20,222.92
  4. Step 4: Simplify right side
    28,556.75x = 865,265,289.44
  5. Step 5: Solve for x
    x = 865,265,289.44/28,556.75
  6. Step 6: Final answer
    x = 30,299.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.