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Finding the Fourth Proportional to 18,579.31, 27,862.48 and 8,185.39

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Solution

The fourth proportional to 18,579.31, 27,862.48 and 8,185.39 is: 12,275.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.31 : 27,862.48 = 8,185.39 : x
  2. Step 2: Convert to fraction form
    18,579.31/27,862.48 = 8,185.39/x
  3. Step 3: Cross multiply
    18,579.31x = 27,862.48 × 8,185.39
  4. Step 4: Simplify right side
    18,579.31x = 228,065,265.17
  5. Step 5: Solve for x
    x = 228,065,265.17/18,579.31
  6. Step 6: Final answer
    x = 12,275.23

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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.