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Finding the Third Proportional to 8,621,916 and 11,988,090

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Solution

The third proportional to 8,621,916 and 11,988,090 is: 16,668,487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621,916 : 11,988,090 = 11,988,090 : x
  2. Step 2: Convert to fraction form
    8,621,916/11,988,090 = 11,988,090/x
  3. Step 3: Cross multiply
    8,621,916x = 11,988,090 × 11,988,090
  4. Step 4: Simplify right side
    8,621,916x = 143,714,301,848,100
  5. Step 5: Solve for x
    x = 143,714,301,848,100/8,621,916
  6. Step 6: Final answer
    x = 16,668,487.82

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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.