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Finding the Third Proportional to 13,131,592 and 20,978,017

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Solution

The third proportional to 13,131,592 and 20,978,017 is: 33,512,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131,592 : 20,978,017 = 20,978,017 : x
  2. Step 2: Convert to fraction form
    13,131,592/20,978,017 = 20,978,017/x
  3. Step 3: Cross multiply
    13,131,592x = 20,978,017 × 20,978,017
  4. Step 4: Simplify right side
    13,131,592x = 440,077,197,252,289
  5. Step 5: Solve for x
    x = 440,077,197,252,289/13,131,592
  6. Step 6: Final answer
    x = 33,512,859.47

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.