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Finding the Fourth Proportional to 18,863.57, 28,290.96 and 7,022.92

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Solution

The fourth proportional to 18,863.57, 28,290.96 and 7,022.92 is: 10,532.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.57 : 28,290.96 = 7,022.92 : x
  2. Step 2: Convert to fraction form
    18,863.57/28,290.96 = 7,022.92/x
  3. Step 3: Cross multiply
    18,863.57x = 28,290.96 × 7,022.92
  4. Step 4: Simplify right side
    18,863.57x = 198,685,078.08
  5. Step 5: Solve for x
    x = 198,685,078.08/18,863.57
  6. Step 6: Final answer
    x = 10,532.74

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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.