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Finding the Fourth Proportional to 18,904.96, 28,367.22 and 8,382.24

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Solution

The fourth proportional to 18,904.96, 28,367.22 and 8,382.24 is: 12,577.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.96 : 28,367.22 = 8,382.24 : x
  2. Step 2: Convert to fraction form
    18,904.96/28,367.22 = 8,382.24/x
  3. Step 3: Cross multiply
    18,904.96x = 28,367.22 × 8,382.24
  4. Step 4: Simplify right side
    18,904.96x = 237,780,846.17
  5. Step 5: Solve for x
    x = 237,780,846.17/18,904.96
  6. Step 6: Final answer
    x = 12,577.70

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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.