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Finding the Fourth Proportional to 12,136, 18,204 and 3,928

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Solution

The fourth proportional to 12,136, 18,204 and 3,928 is: 5,892

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136 : 18,204 = 3,928 : x
  2. Step 2: Convert to fraction form
    12,136/18,204 = 3,928/x
  3. Step 3: Cross multiply
    12,136x = 18,204 × 3,928
  4. Step 4: Simplify right side
    12,136x = 71,505,312
  5. Step 5: Solve for x
    x = 71,505,312/12,136
  6. Step 6: Final answer
    x = 5,892

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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.