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Finding the Fourth Proportional to 20,108.20, 30,162.30 and 9,003.10

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Solution

The fourth proportional to 20,108.20, 30,162.30 and 9,003.10 is: 13,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.20 : 30,162.30 = 9,003.10 : x
  2. Step 2: Convert to fraction form
    20,108.20/30,162.30 = 9,003.10/x
  3. Step 3: Cross multiply
    20,108.20x = 30,162.30 × 9,003.10
  4. Step 4: Simplify right side
    20,108.20x = 271,554,203.13
  5. Step 5: Solve for x
    x = 271,554,203.13/20,108.20
  6. Step 6: Final answer
    x = 13,504.65

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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.