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Finding the Third Proportional to 11,421,820 and 15,662,406

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Solution

The third proportional to 11,421,820 and 15,662,406 is: 21,477,396.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421,820 : 15,662,406 = 15,662,406 : x
  2. Step 2: Convert to fraction form
    11,421,820/15,662,406 = 15,662,406/x
  3. Step 3: Cross multiply
    11,421,820x = 15,662,406 × 15,662,406
  4. Step 4: Simplify right side
    11,421,820x = 245,310,961,708,836
  5. Step 5: Solve for x
    x = 245,310,961,708,836/11,421,820
  6. Step 6: Final answer
    x = 21,477,396.92

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.