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Finding the Third Proportional to 12,858.75 and 18,741.38

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Solution

The third proportional to 12,858.75 and 18,741.38 is: 27,315.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.75 : 18,741.38 = 18,741.38 : x
  2. Step 2: Convert to fraction form
    12,858.75/18,741.38 = 18,741.38/x
  3. Step 3: Cross multiply
    12,858.75x = 18,741.38 × 18,741.38
  4. Step 4: Simplify right side
    12,858.75x = 351,239,136.89
  5. Step 5: Solve for x
    x = 351,239,136.89/12,858.75
  6. Step 6: Final answer
    x = 27,315.19

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.