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Finding the Fourth Proportional to 13,514, 20,271 and 4,280

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Solution

The fourth proportional to 13,514, 20,271 and 4,280 is: 6,420

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,514 : 20,271 = 4,280 : x
  2. Step 2: Convert to fraction form
    13,514/20,271 = 4,280/x
  3. Step 3: Cross multiply
    13,514x = 20,271 × 4,280
  4. Step 4: Simplify right side
    13,514x = 86,759,880
  5. Step 5: Solve for x
    x = 86,759,880/13,514
  6. Step 6: Final answer
    x = 6,420

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