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Finding the Third Proportional to 15,328,776 and 21,313,212

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Solution

The third proportional to 15,328,776 and 21,313,212 is: 29,634,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328,776 : 21,313,212 = 21,313,212 : x
  2. Step 2: Convert to fraction form
    15,328,776/21,313,212 = 21,313,212/x
  3. Step 3: Cross multiply
    15,328,776x = 21,313,212 × 21,313,212
  4. Step 4: Simplify right side
    15,328,776x = 454,253,005,756,944
  5. Step 5: Solve for x
    x = 454,253,005,756,944/15,328,776
  6. Step 6: Final answer
    x = 29,634,003.77

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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.