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Finding the Third Proportional to 13,809,690 and 20,772,191

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Solution

The third proportional to 13,809,690 and 20,772,191 is: 31,245,011.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809,690 : 20,772,191 = 20,772,191 : x
  2. Step 2: Convert to fraction form
    13,809,690/20,772,191 = 20,772,191/x
  3. Step 3: Cross multiply
    13,809,690x = 20,772,191 × 20,772,191
  4. Step 4: Simplify right side
    13,809,690x = 431,483,918,940,481
  5. Step 5: Solve for x
    x = 431,483,918,940,481/13,809,690
  6. Step 6: Final answer
    x = 31,245,011.22

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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.