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Finding the Third Proportional to 18,708.75 and 27,508.50

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Solution

The third proportional to 18,708.75 and 27,508.50 is: 40,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.75 : 27,508.50 = 27,508.50 : x
  2. Step 2: Convert to fraction form
    18,708.75/27,508.50 = 27,508.50/x
  3. Step 3: Cross multiply
    18,708.75x = 27,508.50 × 27,508.50
  4. Step 4: Simplify right side
    18,708.75x = 756,717,572.25
  5. Step 5: Solve for x
    x = 756,717,572.25/18,708.75
  6. Step 6: Final answer
    x = 40,447.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.