Home / 20,738.94-28,619.72-11,786.46

Finding the Fourth Proportional to 20,738.94, 28,619.72 and 11,786.46

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Solution

The fourth proportional to 20,738.94, 28,619.72 and 11,786.46 is: 16,265.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.94 : 28,619.72 = 11,786.46 : x
  2. Step 2: Convert to fraction form
    20,738.94/28,619.72 = 11,786.46/x
  3. Step 3: Cross multiply
    20,738.94x = 28,619.72 × 11,786.46
  4. Step 4: Simplify right side
    20,738.94x = 337,325,184.99
  5. Step 5: Solve for x
    x = 337,325,184.99/20,738.94
  6. Step 6: Final answer
    x = 16,265.31

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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.