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Finding the Third Proportional to 21,687,376 and 28,913,280

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Solution

The third proportional to 21,687,376 and 28,913,280 is: 38,546,745.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687,376 : 28,913,280 = 28,913,280 : x
  2. Step 2: Convert to fraction form
    21,687,376/28,913,280 = 28,913,280/x
  3. Step 3: Cross multiply
    21,687,376x = 28,913,280 × 28,913,280
  4. Step 4: Simplify right side
    21,687,376x = 835,977,760,358,400
  5. Step 5: Solve for x
    x = 835,977,760,358,400/21,687,376
  6. Step 6: Final answer
    x = 38,546,745.37

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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.