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Finding the Third Proportional to 8,646.75 and 13,218.19

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Solution

The third proportional to 8,646.75 and 13,218.19 is: 20,206.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.75 : 13,218.19 = 13,218.19 : x
  2. Step 2: Convert to fraction form
    8,646.75/13,218.19 = 13,218.19/x
  3. Step 3: Cross multiply
    8,646.75x = 13,218.19 × 13,218.19
  4. Step 4: Simplify right side
    8,646.75x = 174,720,480.79
  5. Step 5: Solve for x
    x = 174,720,480.79/8,646.75
  6. Step 6: Final answer
    x = 20,206.49

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.