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Finding the Third Proportional to 18,789.50 and 29,259.50

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Solution

The third proportional to 18,789.50 and 29,259.50 is: 45,563.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.50 : 29,259.50 = 29,259.50 : x
  2. Step 2: Convert to fraction form
    18,789.50/29,259.50 = 29,259.50/x
  3. Step 3: Cross multiply
    18,789.50x = 29,259.50 × 29,259.50
  4. Step 4: Simplify right side
    18,789.50x = 856,118,340.25
  5. Step 5: Solve for x
    x = 856,118,340.25/18,789.50
  6. Step 6: Final answer
    x = 45,563.66

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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.