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Finding the Fourth Proportional to 16,986.08, 25,489.04 and 7,124.54

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Solution

The fourth proportional to 16,986.08, 25,489.04 and 7,124.54 is: 10,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986.08 : 25,489.04 = 7,124.54 : x
  2. Step 2: Convert to fraction form
    16,986.08/25,489.04 = 7,124.54/x
  3. Step 3: Cross multiply
    16,986.08x = 25,489.04 × 7,124.54
  4. Step 4: Simplify right side
    16,986.08x = 181,597,521.97
  5. Step 5: Solve for x
    x = 181,597,521.97/16,986.08
  6. Step 6: Final answer
    x = 10,690.96

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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.