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Finding the Fourth Proportional to 18,975, 28,470.06 and 9,609.96

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Solution

The fourth proportional to 18,975, 28,470.06 and 9,609.96 is: 14,418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975 : 28,470.06 = 9,609.96 : x
  2. Step 2: Convert to fraction form
    18,975/28,470.06 = 9,609.96/x
  3. Step 3: Cross multiply
    18,975x = 28,470.06 × 9,609.96
  4. Step 4: Simplify right side
    18,975x = 273,596,137.80
  5. Step 5: Solve for x
    x = 273,596,137.80/18,975
  6. Step 6: Final answer
    x = 14,418.77

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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.