Home / 20,181.40-30,272.10-13,960.60

Finding the Fourth Proportional to 20,181.40, 30,272.10 and 13,960.60

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Solution

The fourth proportional to 20,181.40, 30,272.10 and 13,960.60 is: 20,940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.40 : 30,272.10 = 13,960.60 : x
  2. Step 2: Convert to fraction form
    20,181.40/30,272.10 = 13,960.60/x
  3. Step 3: Cross multiply
    20,181.40x = 30,272.10 × 13,960.60
  4. Step 4: Simplify right side
    20,181.40x = 422,616,679.26
  5. Step 5: Solve for x
    x = 422,616,679.26/20,181.40
  6. Step 6: Final answer
    x = 20,940.90

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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.