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Finding the Fourth Proportional to 12,326, 18,487.64 and 3,092

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Solution

The fourth proportional to 12,326, 18,487.64 and 3,092 is: 4,637.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,326 : 18,487.64 = 3,092 : x
  2. Step 2: Convert to fraction form
    12,326/18,487.64 = 3,092/x
  3. Step 3: Cross multiply
    12,326x = 18,487.64 × 3,092
  4. Step 4: Simplify right side
    12,326x = 57,163,782.88
  5. Step 5: Solve for x
    x = 57,163,782.88/12,326
  6. Step 6: Final answer
    x = 4,637.66

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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.