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Finding the Third Proportional to 20,971,215 and 28,333,419

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Solution

The third proportional to 20,971,215 and 28,333,419 is: 38,280,215.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,215 : 28,333,419 = 28,333,419 : x
  2. Step 2: Convert to fraction form
    20,971,215/28,333,419 = 28,333,419/x
  3. Step 3: Cross multiply
    20,971,215x = 28,333,419 × 28,333,419
  4. Step 4: Simplify right side
    20,971,215x = 802,782,632,229,561
  5. Step 5: Solve for x
    x = 802,782,632,229,561/20,971,215
  6. Step 6: Final answer
    x = 38,280,215.63

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.