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Finding the Third Proportional to 8,418 and 12,575

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Solution

The third proportional to 8,418 and 12,575 is: 18,784.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418 : 12,575 = 12,575 : x
  2. Step 2: Convert to fraction form
    8,418/12,575 = 12,575/x
  3. Step 3: Cross multiply
    8,418x = 12,575 × 12,575
  4. Step 4: Simplify right side
    8,418x = 158,130,625
  5. Step 5: Solve for x
    x = 158,130,625/8,418
  6. Step 6: Final answer
    x = 18,784.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.