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Finding the Fourth Proportional to 20,069.90, 30,105.06 and 8,383.10

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Solution

The fourth proportional to 20,069.90, 30,105.06 and 8,383.10 is: 12,574.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.90 : 30,105.06 = 8,383.10 : x
  2. Step 2: Convert to fraction form
    20,069.90/30,105.06 = 8,383.10/x
  3. Step 3: Cross multiply
    20,069.90x = 30,105.06 × 8,383.10
  4. Step 4: Simplify right side
    20,069.90x = 252,373,728.49
  5. Step 5: Solve for x
    x = 252,373,728.49/20,069.90
  6. Step 6: Final answer
    x = 12,574.74

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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.