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Finding the Fourth Proportional to 18,220.55, 27,331.22 and 8,353.13

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Solution

The fourth proportional to 18,220.55, 27,331.22 and 8,353.13 is: 12,529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.55 : 27,331.22 = 8,353.13 : x
  2. Step 2: Convert to fraction form
    18,220.55/27,331.22 = 8,353.13/x
  3. Step 3: Cross multiply
    18,220.55x = 27,331.22 × 8,353.13
  4. Step 4: Simplify right side
    18,220.55x = 228,301,117.95
  5. Step 5: Solve for x
    x = 228,301,117.95/18,220.55
  6. Step 6: Final answer
    x = 12,529.87

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Half scale
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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.