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Finding the Third Proportional to 11,811,739.78 and 18,221,302.69

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Solution

The third proportional to 11,811,739.78 and 18,221,302.69 is: 28,108,972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811,739.78 : 18,221,302.69 = 18,221,302.69 : x
  2. Step 2: Convert to fraction form
    11,811,739.78/18,221,302.69 = 18,221,302.69/x
  3. Step 3: Cross multiply
    11,811,739.78x = 18,221,302.69 × 18,221,302.69
  4. Step 4: Simplify right side
    11,811,739.78x = 332,015,871,629,494.75
  5. Step 5: Solve for x
    x = 332,015,871,629,494.75/11,811,739.78
  6. Step 6: Final answer
    x = 28,108,972.75

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.