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Finding the Third Proportional to 8,485,728 and 13,136,711

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Solution

The third proportional to 8,485,728 and 13,136,711 is: 20,336,873.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485,728 : 13,136,711 = 13,136,711 : x
  2. Step 2: Convert to fraction form
    8,485,728/13,136,711 = 13,136,711/x
  3. Step 3: Cross multiply
    8,485,728x = 13,136,711 × 13,136,711
  4. Step 4: Simplify right side
    8,485,728x = 172,573,175,897,521
  5. Step 5: Solve for x
    x = 172,573,175,897,521/8,485,728
  6. Step 6: Final answer
    x = 20,336,873.38

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.