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Finding the Fourth Proportional to 20,090.20, 30,135.30 and 16,202.20

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Solution

The fourth proportional to 20,090.20, 30,135.30 and 16,202.20 is: 24,303.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.20 : 30,135.30 = 16,202.20 : x
  2. Step 2: Convert to fraction form
    20,090.20/30,135.30 = 16,202.20/x
  3. Step 3: Cross multiply
    20,090.20x = 30,135.30 × 16,202.20
  4. Step 4: Simplify right side
    20,090.20x = 488,258,157.66
  5. Step 5: Solve for x
    x = 488,258,157.66/20,090.20
  6. Step 6: Final answer
    x = 24,303.30

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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.