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Finding the Third Proportional to 20,309 and 30,859.50

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Solution

The third proportional to 20,309 and 30,859.50 is: 46,890.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309 : 30,859.50 = 30,859.50 : x
  2. Step 2: Convert to fraction form
    20,309/30,859.50 = 30,859.50/x
  3. Step 3: Cross multiply
    20,309x = 30,859.50 × 30,859.50
  4. Step 4: Simplify right side
    20,309x = 952,308,740.25
  5. Step 5: Solve for x
    x = 952,308,740.25/20,309
  6. Step 6: Final answer
    x = 46,890.97

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.