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Finding the Third Proportional to 18,802.13 and 20,665.13

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Solution

The third proportional to 18,802.13 and 20,665.13 is: 22,712.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.13 : 20,665.13 = 20,665.13 : x
  2. Step 2: Convert to fraction form
    18,802.13/20,665.13 = 20,665.13/x
  3. Step 3: Cross multiply
    18,802.13x = 20,665.13 × 20,665.13
  4. Step 4: Simplify right side
    18,802.13x = 427,047,391.27
  5. Step 5: Solve for x
    x = 427,047,391.27/18,802.13
  6. Step 6: Final answer
    x = 22,712.72

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.