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Finding the Third Proportional to 15,212,986,250 and 21,021,471,723

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Solution

The third proportional to 15,212,986,250 and 21,021,471,723 is: 29,047,700,835.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,212,986,250 : 21,021,471,723 = 21,021,471,723 : x
  2. Step 2: Convert to fraction form
    15,212,986,250/21,021,471,723 = 21,021,471,723/x
  3. Step 3: Cross multiply
    15,212,986,250x = 21,021,471,723 × 21,021,471,723
  4. Step 4: Simplify right side
    15,212,986,250x = 441,902,273,400,888,557,568
  5. Step 5: Solve for x
    x = 441,902,273,400,888,557,568/15,212,986,250
  6. Step 6: Final answer
    x = 29,047,700,835.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.