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Finding the Fourth Proportional to 12,551.62, 18,812.82 and 9,234

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Solution

The fourth proportional to 12,551.62, 18,812.82 and 9,234 is: 13,840.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.62 : 18,812.82 = 9,234 : x
  2. Step 2: Convert to fraction form
    12,551.62/18,812.82 = 9,234/x
  3. Step 3: Cross multiply
    12,551.62x = 18,812.82 × 9,234
  4. Step 4: Simplify right side
    12,551.62x = 173,717,579.88
  5. Step 5: Solve for x
    x = 173,717,579.88/12,551.62
  6. Step 6: Final answer
    x = 13,840.25

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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.