Home / 20,156.70-30,198.60-16,438.80

Finding the Fourth Proportional to 20,156.70, 30,198.60 and 16,438.80

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Solution

The fourth proportional to 20,156.70, 30,198.60 and 16,438.80 is: 24,628.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.70 : 30,198.60 = 16,438.80 : x
  2. Step 2: Convert to fraction form
    20,156.70/30,198.60 = 16,438.80/x
  3. Step 3: Cross multiply
    20,156.70x = 30,198.60 × 16,438.80
  4. Step 4: Simplify right side
    20,156.70x = 496,428,745.68
  5. Step 5: Solve for x
    x = 496,428,745.68/20,156.70
  6. Step 6: Final answer
    x = 24,628.47

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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.