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Finding the Third Proportional to 16,854.75 and 18,663.75

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Solution

The third proportional to 16,854.75 and 18,663.75 is: 20,666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,854.75 : 18,663.75 = 18,663.75 : x
  2. Step 2: Convert to fraction form
    16,854.75/18,663.75 = 18,663.75/x
  3. Step 3: Cross multiply
    16,854.75x = 18,663.75 × 18,663.75
  4. Step 4: Simplify right side
    16,854.75x = 348,335,564.06
  5. Step 5: Solve for x
    x = 348,335,564.06/16,854.75
  6. Step 6: Final answer
    x = 20,666.91

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.