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Finding the Fourth Proportional to 12,514, 18,771 and 3,280

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Solution

The fourth proportional to 12,514, 18,771 and 3,280 is: 4,920

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,514 : 18,771 = 3,280 : x
  2. Step 2: Convert to fraction form
    12,514/18,771 = 3,280/x
  3. Step 3: Cross multiply
    12,514x = 18,771 × 3,280
  4. Step 4: Simplify right side
    12,514x = 61,568,880
  5. Step 5: Solve for x
    x = 61,568,880/12,514
  6. Step 6: Final answer
    x = 4,920

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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.