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Finding the Fourth Proportional to 18,694.86, 28,052 and 7,609.74

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Solution

The fourth proportional to 18,694.86, 28,052 and 7,609.74 is: 11,418.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.86 : 28,052 = 7,609.74 : x
  2. Step 2: Convert to fraction form
    18,694.86/28,052 = 7,609.74/x
  3. Step 3: Cross multiply
    18,694.86x = 28,052 × 7,609.74
  4. Step 4: Simplify right side
    18,694.86x = 213,468,426.48
  5. Step 5: Solve for x
    x = 213,468,426.48/18,694.86
  6. Step 6: Final answer
    x = 11,418.56

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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.