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Finding the Fourth Proportional to 14,149.50, 21,234 and 4,915.50

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Solution

The fourth proportional to 14,149.50, 21,234 and 4,915.50 is: 7,376.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,149.50 : 21,234 = 4,915.50 : x
  2. Step 2: Convert to fraction form
    14,149.50/21,234 = 4,915.50/x
  3. Step 3: Cross multiply
    14,149.50x = 21,234 × 4,915.50
  4. Step 4: Simplify right side
    14,149.50x = 104,375,727
  5. Step 5: Solve for x
    x = 104,375,727/14,149.50
  6. Step 6: Final answer
    x = 7,376.64

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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.