Home / 20,882.97-31,336.70-8,401.05

Finding the Fourth Proportional to 20,882.97, 31,336.70 and 8,401.05

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Solution

The fourth proportional to 20,882.97, 31,336.70 and 8,401.05 is: 12,606.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.97 : 31,336.70 = 8,401.05 : x
  2. Step 2: Convert to fraction form
    20,882.97/31,336.70 = 8,401.05/x
  3. Step 3: Cross multiply
    20,882.97x = 31,336.70 × 8,401.05
  4. Step 4: Simplify right side
    20,882.97x = 263,261,141.53
  5. Step 5: Solve for x
    x = 263,261,141.53/20,882.97
  6. Step 6: Final answer
    x = 12,606.50

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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.