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Finding the Fourth Proportional to 12,272, 18,408.96 and 4,064

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Solution

The fourth proportional to 12,272, 18,408.96 and 4,064 is: 6,096.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272 : 18,408.96 = 4,064 : x
  2. Step 2: Convert to fraction form
    12,272/18,408.96 = 4,064/x
  3. Step 3: Cross multiply
    12,272x = 18,408.96 × 4,064
  4. Step 4: Simplify right side
    12,272x = 74,814,013.44
  5. Step 5: Solve for x
    x = 74,814,013.44/12,272
  6. Step 6: Final answer
    x = 6,096.32

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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.