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Finding the Third Proportional to 8,821.13 and 13,717.69

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Solution

The third proportional to 8,821.13 and 13,717.69 is: 21,332.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.13 : 13,717.69 = 13,717.69 : x
  2. Step 2: Convert to fraction form
    8,821.13/13,717.69 = 13,717.69/x
  3. Step 3: Cross multiply
    8,821.13x = 13,717.69 × 13,717.69
  4. Step 4: Simplify right side
    8,821.13x = 188,174,950.35
  5. Step 5: Solve for x
    x = 188,174,950.35/8,821.13
  6. Step 6: Final answer
    x = 21,332.31

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.