Home / 20,648.72-30,976.92-6,807.44

Finding the Fourth Proportional to 20,648.72, 30,976.92 and 6,807.44

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Solution

The fourth proportional to 20,648.72, 30,976.92 and 6,807.44 is: 10,212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.72 : 30,976.92 = 6,807.44 : x
  2. Step 2: Convert to fraction form
    20,648.72/30,976.92 = 6,807.44/x
  3. Step 3: Cross multiply
    20,648.72x = 30,976.92 × 6,807.44
  4. Step 4: Simplify right side
    20,648.72x = 210,873,524.28
  5. Step 5: Solve for x
    x = 210,873,524.28/20,648.72
  6. Step 6: Final answer
    x = 10,212.43

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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.