Home / 20,738.50-28,619.85-11,786.38

Finding the Fourth Proportional to 20,738.50, 28,619.85 and 11,786.38

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Solution

The fourth proportional to 20,738.50, 28,619.85 and 11,786.38 is: 16,265.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.50 : 28,619.85 = 11,786.38 : x
  2. Step 2: Convert to fraction form
    20,738.50/28,619.85 = 11,786.38/x
  3. Step 3: Cross multiply
    20,738.50x = 28,619.85 × 11,786.38
  4. Step 4: Simplify right side
    20,738.50x = 337,324,427.64
  5. Step 5: Solve for x
    x = 337,324,427.64/20,738.50
  6. Step 6: Final answer
    x = 16,265.61

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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.