Home / 20,146.50-30,219.75-6,998.90

Finding the Fourth Proportional to 20,146.50, 30,219.75 and 6,998.90

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Solution

The fourth proportional to 20,146.50, 30,219.75 and 6,998.90 is: 10,498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.50 : 30,219.75 = 6,998.90 : x
  2. Step 2: Convert to fraction form
    20,146.50/30,219.75 = 6,998.90/x
  3. Step 3: Cross multiply
    20,146.50x = 30,219.75 × 6,998.90
  4. Step 4: Simplify right side
    20,146.50x = 211,504,857.18
  5. Step 5: Solve for x
    x = 211,504,857.18/20,146.50
  6. Step 6: Final answer
    x = 10,498.34

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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.