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Finding the Fourth Proportional to 18,589.77, 27,894.21 and 12,354.06

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Solution

The fourth proportional to 18,589.77, 27,894.21 and 12,354.06 is: 18,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.77 : 27,894.21 = 12,354.06 : x
  2. Step 2: Convert to fraction form
    18,589.77/27,894.21 = 12,354.06/x
  3. Step 3: Cross multiply
    18,589.77x = 27,894.21 × 12,354.06
  4. Step 4: Simplify right side
    18,589.77x = 344,606,743.99
  5. Step 5: Solve for x
    x = 344,606,743.99/18,589.77
  6. Step 6: Final answer
    x = 18,537.44

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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.