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Finding the Fourth Proportional to 14,375.56, 21,563.34 and 9,115.82

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Solution

The fourth proportional to 14,375.56, 21,563.34 and 9,115.82 is: 13,673.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,375.56 : 21,563.34 = 9,115.82 : x
  2. Step 2: Convert to fraction form
    14,375.56/21,563.34 = 9,115.82/x
  3. Step 3: Cross multiply
    14,375.56x = 21,563.34 × 9,115.82
  4. Step 4: Simplify right side
    14,375.56x = 196,567,526.04
  5. Step 5: Solve for x
    x = 196,567,526.04/14,375.56
  6. Step 6: Final answer
    x = 13,673.73

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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.