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Finding the Fourth Proportional to 20,079, 30,119.22 and 6,227.64

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Solution

The fourth proportional to 20,079, 30,119.22 and 6,227.64 is: 9,341.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079 : 30,119.22 = 6,227.64 : x
  2. Step 2: Convert to fraction form
    20,079/30,119.22 = 6,227.64/x
  3. Step 3: Cross multiply
    20,079x = 30,119.22 × 6,227.64
  4. Step 4: Simplify right side
    20,079x = 187,571,659.24
  5. Step 5: Solve for x
    x = 187,571,659.24/20,079
  6. Step 6: Final answer
    x = 9,341.68

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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.