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Finding the Third Proportional to 13,426,390 and 20,649,238

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Solution

The third proportional to 13,426,390 and 20,649,238 is: 31,757,682.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426,390 : 20,649,238 = 20,649,238 : x
  2. Step 2: Convert to fraction form
    13,426,390/20,649,238 = 20,649,238/x
  3. Step 3: Cross multiply
    13,426,390x = 20,649,238 × 20,649,238
  4. Step 4: Simplify right side
    13,426,390x = 426,391,029,980,644
  5. Step 5: Solve for x
    x = 426,391,029,980,644/13,426,390
  6. Step 6: Final answer
    x = 31,757,682.44

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.