Home / 20,768.50-28,662.99-11,694.15

Finding the Fourth Proportional to 20,768.50, 28,662.99 and 11,694.15

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Solution

The fourth proportional to 20,768.50, 28,662.99 and 11,694.15 is: 16,139.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.50 : 28,662.99 = 11,694.15 : x
  2. Step 2: Convert to fraction form
    20,768.50/28,662.99 = 11,694.15/x
  3. Step 3: Cross multiply
    20,768.50x = 28,662.99 × 11,694.15
  4. Step 4: Simplify right side
    20,768.50x = 335,189,212.93
  5. Step 5: Solve for x
    x = 335,189,212.93/20,768.50
  6. Step 6: Final answer
    x = 16,139.31

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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.