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Finding the Third Proportional to 15,328,778 and 21,313,215

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Solution

The third proportional to 15,328,778 and 21,313,215 is: 29,634,008.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328,778 : 21,313,215 = 21,313,215 : x
  2. Step 2: Convert to fraction form
    15,328,778/21,313,215 = 21,313,215/x
  3. Step 3: Cross multiply
    15,328,778x = 21,313,215 × 21,313,215
  4. Step 4: Simplify right side
    15,328,778x = 454,253,133,636,225
  5. Step 5: Solve for x
    x = 454,253,133,636,225/15,328,778
  6. Step 6: Final answer
    x = 29,634,008.24

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.