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Finding the Fourth Proportional to 18,698.46, 28,046.07 and 8,165.22

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Solution

The fourth proportional to 18,698.46, 28,046.07 and 8,165.22 is: 12,247.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.46 : 28,046.07 = 8,165.22 : x
  2. Step 2: Convert to fraction form
    18,698.46/28,046.07 = 8,165.22/x
  3. Step 3: Cross multiply
    18,698.46x = 28,046.07 × 8,165.22
  4. Step 4: Simplify right side
    18,698.46x = 229,002,331.69
  5. Step 5: Solve for x
    x = 229,002,331.69/18,698.46
  6. Step 6: Final answer
    x = 12,247.12

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Double scale
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Similar ratio
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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.