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Finding the Fourth Proportional to 14,662.86, 20,235 and 8,375.28

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Solution

The fourth proportional to 14,662.86, 20,235 and 8,375.28 is: 11,558.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.86 : 20,235 = 8,375.28 : x
  2. Step 2: Convert to fraction form
    14,662.86/20,235 = 8,375.28/x
  3. Step 3: Cross multiply
    14,662.86x = 20,235 × 8,375.28
  4. Step 4: Simplify right side
    14,662.86x = 169,473,790.80
  5. Step 5: Solve for x
    x = 169,473,790.80/14,662.86
  6. Step 6: Final answer
    x = 11,558.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.