Home / 20,057.22-30,089.34-8,378.64

Finding the Fourth Proportional to 20,057.22, 30,089.34 and 8,378.64

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Solution

The fourth proportional to 20,057.22, 30,089.34 and 8,378.64 is: 12,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.22 : 30,089.34 = 8,378.64 : x
  2. Step 2: Convert to fraction form
    20,057.22/30,089.34 = 8,378.64/x
  3. Step 3: Cross multiply
    20,057.22x = 30,089.34 × 8,378.64
  4. Step 4: Simplify right side
    20,057.22x = 252,107,747.70
  5. Step 5: Solve for x
    x = 252,107,747.70/20,057.22
  6. Step 6: Final answer
    x = 12,569.43

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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.