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Finding the Fourth Proportional to 14,949, 20,631.06 and 8,325

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Solution

The fourth proportional to 14,949, 20,631.06 and 8,325 is: 11,489.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,949 : 20,631.06 = 8,325 : x
  2. Step 2: Convert to fraction form
    14,949/20,631.06 = 8,325/x
  3. Step 3: Cross multiply
    14,949x = 20,631.06 × 8,325
  4. Step 4: Simplify right side
    14,949x = 171,753,574.50
  5. Step 5: Solve for x
    x = 171,753,574.50/14,949
  6. Step 6: Final answer
    x = 11,489.30

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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.