Home / 20,768.82-28,661.06-11,337.44

Finding the Fourth Proportional to 20,768.82, 28,661.06 and 11,337.44

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Solution

The fourth proportional to 20,768.82, 28,661.06 and 11,337.44 is: 15,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.82 : 28,661.06 = 11,337.44 : x
  2. Step 2: Convert to fraction form
    20,768.82/28,661.06 = 11,337.44/x
  3. Step 3: Cross multiply
    20,768.82x = 28,661.06 × 11,337.44
  4. Step 4: Simplify right side
    20,768.82x = 324,943,048.09
  5. Step 5: Solve for x
    x = 324,943,048.09/20,768.82
  6. Step 6: Final answer
    x = 15,645.72

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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.