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Finding the Third Proportional to 12,212,071.31 and 18,891,989.44

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Solution

The third proportional to 12,212,071.31 and 18,891,989.44 is: 29,225,776.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212,071.31 : 18,891,989.44 = 18,891,989.44 : x
  2. Step 2: Convert to fraction form
    12,212,071.31/18,891,989.44 = 18,891,989.44/x
  3. Step 3: Cross multiply
    12,212,071.31x = 18,891,989.44 × 18,891,989.44
  4. Step 4: Simplify right side
    12,212,071.31x = 356,907,264,906,611.56
  5. Step 5: Solve for x
    x = 356,907,264,906,611.56/12,212,071.31
  6. Step 6: Final answer
    x = 29,225,776.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.