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Finding the Fourth Proportional to 12,554, 18,832.08 and 3,320

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Solution

The fourth proportional to 12,554, 18,832.08 and 3,320 is: 4,980.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554 : 18,832.08 = 3,320 : x
  2. Step 2: Convert to fraction form
    12,554/18,832.08 = 3,320/x
  3. Step 3: Cross multiply
    12,554x = 18,832.08 × 3,320
  4. Step 4: Simplify right side
    12,554x = 62,522,505.60
  5. Step 5: Solve for x
    x = 62,522,505.60/12,554
  6. Step 6: Final answer
    x = 4,980.29

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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.