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Finding the Fourth Proportional to 20,164.70, 30,247.05 and 18,350.30

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Solution

The fourth proportional to 20,164.70, 30,247.05 and 18,350.30 is: 27,525.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,164.70 : 30,247.05 = 18,350.30 : x
  2. Step 2: Convert to fraction form
    20,164.70/30,247.05 = 18,350.30/x
  3. Step 3: Cross multiply
    20,164.70x = 30,247.05 × 18,350.30
  4. Step 4: Simplify right side
    20,164.70x = 555,042,441.62
  5. Step 5: Solve for x
    x = 555,042,441.62/20,164.70
  6. Step 6: Final answer
    x = 27,525.45

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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.