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Finding the Fourth Proportional to 12,388.71, 18,584.24 and 4,068.75

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Solution

The fourth proportional to 12,388.71, 18,584.24 and 4,068.75 is: 6,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.71 : 18,584.24 = 4,068.75 : x
  2. Step 2: Convert to fraction form
    12,388.71/18,584.24 = 4,068.75/x
  3. Step 3: Cross multiply
    12,388.71x = 18,584.24 × 4,068.75
  4. Step 4: Simplify right side
    12,388.71x = 75,614,606.16
  5. Step 5: Solve for x
    x = 75,614,606.16/12,388.71
  6. Step 6: Final answer
    x = 6,103.51

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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.