Home / 20,145.22-30,217.79-6,997.70

Finding the Fourth Proportional to 20,145.22, 30,217.79 and 6,997.70

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Solution

The fourth proportional to 20,145.22, 30,217.79 and 6,997.70 is: 10,496.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.22 : 30,217.79 = 6,997.70 : x
  2. Step 2: Convert to fraction form
    20,145.22/30,217.79 = 6,997.70/x
  3. Step 3: Cross multiply
    20,145.22x = 30,217.79 × 6,997.70
  4. Step 4: Simplify right side
    20,145.22x = 211,454,994.09
  5. Step 5: Solve for x
    x = 211,454,994.09/20,145.22
  6. Step 6: Final answer
    x = 10,496.54

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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.