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Finding the Third Proportional to 13,865,755 and 21,638,039

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Solution

The third proportional to 13,865,755 and 21,638,039 is: 33,766,984.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865,755 : 21,638,039 = 21,638,039 : x
  2. Step 2: Convert to fraction form
    13,865,755/21,638,039 = 21,638,039/x
  3. Step 3: Cross multiply
    13,865,755x = 21,638,039 × 21,638,039
  4. Step 4: Simplify right side
    13,865,755x = 468,204,731,765,521
  5. Step 5: Solve for x
    x = 468,204,731,765,521/13,865,755
  6. Step 6: Final answer
    x = 33,766,984.33

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.