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Finding the Fourth Proportional to 39,166.80, 58,759.92 and 18,366

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Solution

The fourth proportional to 39,166.80, 58,759.92 and 18,366 is: 27,553.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,166.80 : 58,759.92 = 18,366 : x
  2. Step 2: Convert to fraction form
    39,166.80/58,759.92 = 18,366/x
  3. Step 3: Cross multiply
    39,166.80x = 58,759.92 × 18,366
  4. Step 4: Simplify right side
    39,166.80x = 1,079,184,690.72
  5. Step 5: Solve for x
    x = 1,079,184,690.72/39,166.80
  6. Step 6: Final answer
    x = 27,553.56

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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.