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Finding the Third Proportional to 7,851 and 14,118

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Solution

The third proportional to 7,851 and 14,118 is: 25,387.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851 : 14,118 = 14,118 : x
  2. Step 2: Convert to fraction form
    7,851/14,118 = 14,118/x
  3. Step 3: Cross multiply
    7,851x = 14,118 × 14,118
  4. Step 4: Simplify right side
    7,851x = 199,317,924
  5. Step 5: Solve for x
    x = 199,317,924/7,851
  6. Step 6: Final answer
    x = 25,387.58

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.