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Finding the Fourth Proportional to 20,182.70, 30,274.05 and 6,331.70

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Solution

The fourth proportional to 20,182.70, 30,274.05 and 6,331.70 is: 9,497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.70 : 30,274.05 = 6,331.70 : x
  2. Step 2: Convert to fraction form
    20,182.70/30,274.05 = 6,331.70/x
  3. Step 3: Cross multiply
    20,182.70x = 30,274.05 × 6,331.70
  4. Step 4: Simplify right side
    20,182.70x = 191,686,202.39
  5. Step 5: Solve for x
    x = 191,686,202.39/20,182.70
  6. Step 6: Final answer
    x = 9,497.55

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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.