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Finding the Third Proportional to 18,999.56 and 39,331.83

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Solution

The third proportional to 18,999.56 and 39,331.83 is: 81,422.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.56 : 39,331.83 = 39,331.83 : x
  2. Step 2: Convert to fraction form
    18,999.56/39,331.83 = 39,331.83/x
  3. Step 3: Cross multiply
    18,999.56x = 39,331.83 × 39,331.83
  4. Step 4: Simplify right side
    18,999.56x = 1,546,992,703.65
  5. Step 5: Solve for x
    x = 1,546,992,703.65/18,999.56
  6. Step 6: Final answer
    x = 81,422.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.