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Finding the Third Proportional to 18,135 and 25,683.75

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Solution

The third proportional to 18,135 and 25,683.75 is: 36,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135 : 25,683.75 = 25,683.75 : x
  2. Step 2: Convert to fraction form
    18,135/25,683.75 = 25,683.75/x
  3. Step 3: Cross multiply
    18,135x = 25,683.75 × 25,683.75
  4. Step 4: Simplify right side
    18,135x = 659,655,014.06
  5. Step 5: Solve for x
    x = 659,655,014.06/18,135
  6. Step 6: Final answer
    x = 36,374.69

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.