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Finding the Third Proportional to 21,687,348 and 28,913,238

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Solution

The third proportional to 21,687,348 and 28,913,238 is: 38,546,683.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687,348 : 28,913,238 = 28,913,238 : x
  2. Step 2: Convert to fraction form
    21,687,348/28,913,238 = 28,913,238/x
  3. Step 3: Cross multiply
    21,687,348x = 28,913,238 × 28,913,238
  4. Step 4: Simplify right side
    21,687,348x = 835,975,331,644,644
  5. Step 5: Solve for x
    x = 835,975,331,644,644/21,687,348
  6. Step 6: Final answer
    x = 38,546,683.15

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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.