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Finding the Third Proportional to 12,551,989 and 19,396,020

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Solution

The third proportional to 12,551,989 and 19,396,020 is: 29,971,791.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551,989 : 19,396,020 = 19,396,020 : x
  2. Step 2: Convert to fraction form
    12,551,989/19,396,020 = 19,396,020/x
  3. Step 3: Cross multiply
    12,551,989x = 19,396,020 × 19,396,020
  4. Step 4: Simplify right side
    12,551,989x = 376,205,591,840,400
  5. Step 5: Solve for x
    x = 376,205,591,840,400/12,551,989
  6. Step 6: Final answer
    x = 29,971,791.07

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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.