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Finding the Fourth Proportional to 18,949.92, 28,422.24 and 6,469.92

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Solution

The fourth proportional to 18,949.92, 28,422.24 and 6,469.92 is: 9,703.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.92 : 28,422.24 = 6,469.92 : x
  2. Step 2: Convert to fraction form
    18,949.92/28,422.24 = 6,469.92/x
  3. Step 3: Cross multiply
    18,949.92x = 28,422.24 × 6,469.92
  4. Step 4: Simplify right side
    18,949.92x = 183,889,619.02
  5. Step 5: Solve for x
    x = 183,889,619.02/18,949.92
  6. Step 6: Final answer
    x = 9,703.98

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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.