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Finding the Fourth Proportional to 19,015.92, 28,524 and 12,447.62

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Solution

The fourth proportional to 19,015.92, 28,524 and 12,447.62 is: 18,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,015.92 : 28,524 = 12,447.62 : x
  2. Step 2: Convert to fraction form
    19,015.92/28,524 = 12,447.62/x
  3. Step 3: Cross multiply
    19,015.92x = 28,524 × 12,447.62
  4. Step 4: Simplify right side
    19,015.92x = 355,055,912.88
  5. Step 5: Solve for x
    x = 355,055,912.88/19,015.92
  6. Step 6: Final answer
    x = 18,671.51

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1.5x scale

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.