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Finding the Third Proportional to 13,689,891 and 20,492,190

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Solution

The third proportional to 13,689,891 and 20,492,190 is: 30,674,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689,891 : 20,492,190 = 20,492,190 : x
  2. Step 2: Convert to fraction form
    13,689,891/20,492,190 = 20,492,190/x
  3. Step 3: Cross multiply
    13,689,891x = 20,492,190 × 20,492,190
  4. Step 4: Simplify right side
    13,689,891x = 419,929,850,996,100
  5. Step 5: Solve for x
    x = 419,929,850,996,100/13,689,891
  6. Step 6: Final answer
    x = 30,674,448.10

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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.