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Finding the Fourth Proportional to 20,450.60, 30,659.70 and 11,216.60

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Solution

The fourth proportional to 20,450.60, 30,659.70 and 11,216.60 is: 16,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.60 : 30,659.70 = 11,216.60 : x
  2. Step 2: Convert to fraction form
    20,450.60/30,659.70 = 11,216.60/x
  3. Step 3: Cross multiply
    20,450.60x = 30,659.70 × 11,216.60
  4. Step 4: Simplify right side
    20,450.60x = 343,897,591.02
  5. Step 5: Solve for x
    x = 343,897,591.02/20,450.60
  6. Step 6: Final answer
    x = 16,816.01

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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.