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Finding the Fourth Proportional to 9,630.70, 14,446.05 and 8,221.30

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Solution

The fourth proportional to 9,630.70, 14,446.05 and 8,221.30 is: 12,331.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,630.70 : 14,446.05 = 8,221.30 : x
  2. Step 2: Convert to fraction form
    9,630.70/14,446.05 = 8,221.30/x
  3. Step 3: Cross multiply
    9,630.70x = 14,446.05 × 8,221.30
  4. Step 4: Simplify right side
    9,630.70x = 118,765,310.87
  5. Step 5: Solve for x
    x = 118,765,310.87/9,630.70
  6. Step 6: Final answer
    x = 12,331.95

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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.