Home / 20,147.20-30,222.24-6,997.92

Finding the Fourth Proportional to 20,147.20, 30,222.24 and 6,997.92

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Solution

The fourth proportional to 20,147.20, 30,222.24 and 6,997.92 is: 10,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.20 : 30,222.24 = 6,997.92 : x
  2. Step 2: Convert to fraction form
    20,147.20/30,222.24 = 6,997.92/x
  3. Step 3: Cross multiply
    20,147.20x = 30,222.24 × 6,997.92
  4. Step 4: Simplify right side
    20,147.20x = 211,492,817.74
  5. Step 5: Solve for x
    x = 211,492,817.74/20,147.20
  6. Step 6: Final answer
    x = 10,497.38

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Half scale
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Double scale
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Similar ratio
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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.