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Finding the Fourth Proportional to 16,919.45, 25,362.44 and 8,019.15

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Solution

The fourth proportional to 16,919.45, 25,362.44 and 8,019.15 is: 12,020.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,919.45 : 25,362.44 = 8,019.15 : x
  2. Step 2: Convert to fraction form
    16,919.45/25,362.44 = 8,019.15/x
  3. Step 3: Cross multiply
    16,919.45x = 25,362.44 × 8,019.15
  4. Step 4: Simplify right side
    16,919.45x = 203,385,170.63
  5. Step 5: Solve for x
    x = 203,385,170.63/16,919.45
  6. Step 6: Final answer
    x = 12,020.79

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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.