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Finding the Third Proportional to 21,687,351 and 28,913,241

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Solution

The third proportional to 21,687,351 and 28,913,241 is: 38,546,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687,351 : 28,913,241 = 28,913,241 : x
  2. Step 2: Convert to fraction form
    21,687,351/28,913,241 = 28,913,241/x
  3. Step 3: Cross multiply
    21,687,351x = 28,913,241 × 28,913,241
  4. Step 4: Simplify right side
    21,687,351x = 835,975,505,124,081
  5. Step 5: Solve for x
    x = 835,975,505,124,081/21,687,351
  6. Step 6: Final answer
    x = 38,546,685.81

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.