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Finding the Third Proportional to 20,778.64 and 20,778.64

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Solution

The third proportional to 20,778.64 and 20,778.64 is: 20,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.64 : 20,778.64 = 20,778.64 : x
  2. Step 2: Convert to fraction form
    20,778.64/20,778.64 = 20,778.64/x
  3. Step 3: Cross multiply
    20,778.64x = 20,778.64 × 20,778.64
  4. Step 4: Simplify right side
    20,778.64x = 431,751,703.31
  5. Step 5: Solve for x
    x = 431,751,703.31/20,778.64
  6. Step 6: Final answer
    x = 20,778.64

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Why These Related Problems?

These problems maintain the same ratio (1) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.