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Finding the Third Proportional to 18,679.50 and 25,359.75

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Solution

The third proportional to 18,679.50 and 25,359.75 is: 34,429.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,679.50 : 25,359.75 = 25,359.75 : x
  2. Step 2: Convert to fraction form
    18,679.50/25,359.75 = 25,359.75/x
  3. Step 3: Cross multiply
    18,679.50x = 25,359.75 × 25,359.75
  4. Step 4: Simplify right side
    18,679.50x = 643,116,920.06
  5. Step 5: Solve for x
    x = 643,116,920.06/18,679.50
  6. Step 6: Final answer
    x = 34,429.02

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.