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Finding the Fourth Proportional to 18,951.92, 28,425.24 and 6,471.92

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Solution

The fourth proportional to 18,951.92, 28,425.24 and 6,471.92 is: 9,706.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.92 : 28,425.24 = 6,471.92 : x
  2. Step 2: Convert to fraction form
    18,951.92/28,425.24 = 6,471.92/x
  3. Step 3: Cross multiply
    18,951.92x = 28,425.24 × 6,471.92
  4. Step 4: Simplify right side
    18,951.92x = 183,965,879.26
  5. Step 5: Solve for x
    x = 183,965,879.26/18,951.92
  6. Step 6: Final answer
    x = 9,706.98

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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.