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Finding the Third Proportional to 20,331 and 28,228.50

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Solution

The third proportional to 20,331 and 28,228.50 is: 39,193.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331 : 28,228.50 = 28,228.50 : x
  2. Step 2: Convert to fraction form
    20,331/28,228.50 = 28,228.50/x
  3. Step 3: Cross multiply
    20,331x = 28,228.50 × 28,228.50
  4. Step 4: Simplify right side
    20,331x = 796,848,212.25
  5. Step 5: Solve for x
    x = 796,848,212.25/20,331
  6. Step 6: Final answer
    x = 39,193.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.