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Finding the Fourth Proportional to 18,794.58, 28,197.41 and 7,108.71

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Solution

The fourth proportional to 18,794.58, 28,197.41 and 7,108.71 is: 10,665.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.58 : 28,197.41 = 7,108.71 : x
  2. Step 2: Convert to fraction form
    18,794.58/28,197.41 = 7,108.71/x
  3. Step 3: Cross multiply
    18,794.58x = 28,197.41 × 7,108.71
  4. Step 4: Simplify right side
    18,794.58x = 200,447,174.90
  5. Step 5: Solve for x
    x = 200,447,174.90/18,794.58
  6. Step 6: Final answer
    x = 10,665.16

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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.