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Finding the Fourth Proportional to 40,344, 60,516 and 12,642

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Solution

The fourth proportional to 40,344, 60,516 and 12,642 is: 18,963

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,344 : 60,516 = 12,642 : x
  2. Step 2: Convert to fraction form
    40,344/60,516 = 12,642/x
  3. Step 3: Cross multiply
    40,344x = 60,516 × 12,642
  4. Step 4: Simplify right side
    40,344x = 765,043,272
  5. Step 5: Solve for x
    x = 765,043,272/40,344
  6. Step 6: Final answer
    x = 18,963

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.