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Finding the Third Proportional to 13,378,666 and 20,193,388

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Solution

The third proportional to 13,378,666 and 20,193,388 is: 30,479,340.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378,666 : 20,193,388 = 20,193,388 : x
  2. Step 2: Convert to fraction form
    13,378,666/20,193,388 = 20,193,388/x
  3. Step 3: Cross multiply
    13,378,666x = 20,193,388 × 20,193,388
  4. Step 4: Simplify right side
    13,378,666x = 407,772,918,918,544
  5. Step 5: Solve for x
    x = 407,772,918,918,544/13,378,666
  6. Step 6: Final answer
    x = 30,479,340.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.