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Finding the Fourth Proportional to 18,093.08, 27,139.47 and 4,945.42

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Solution

The fourth proportional to 18,093.08, 27,139.47 and 4,945.42 is: 7,418.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,093.08 : 27,139.47 = 4,945.42 : x
  2. Step 2: Convert to fraction form
    18,093.08/27,139.47 = 4,945.42/x
  3. Step 3: Cross multiply
    18,093.08x = 27,139.47 × 4,945.42
  4. Step 4: Simplify right side
    18,093.08x = 134,216,093.11
  5. Step 5: Solve for x
    x = 134,216,093.11/18,093.08
  6. Step 6: Final answer
    x = 7,418.09

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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.