Home / 28,778.24-39,704.82-16,200.56

Finding the Fourth Proportional to 28,778.24, 39,704.82 and 16,200.56

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Solution

The fourth proportional to 28,778.24, 39,704.82 and 16,200.56 is: 22,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.24 : 39,704.82 = 16,200.56 : x
  2. Step 2: Convert to fraction form
    28,778.24/39,704.82 = 16,200.56/x
  3. Step 3: Cross multiply
    28,778.24x = 39,704.82 × 16,200.56
  4. Step 4: Simplify right side
    28,778.24x = 643,240,120.18
  5. Step 5: Solve for x
    x = 643,240,120.18/28,778.24
  6. Step 6: Final answer
    x = 22,351.62

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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.