Home / 20,181.40-30,261.30-8,481.40

Finding the Fourth Proportional to 20,181.40, 30,261.30 and 8,481.40

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Solution

The fourth proportional to 20,181.40, 30,261.30 and 8,481.40 is: 12,717.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.40 : 30,261.30 = 8,481.40 : x
  2. Step 2: Convert to fraction form
    20,181.40/30,261.30 = 8,481.40/x
  3. Step 3: Cross multiply
    20,181.40x = 30,261.30 × 8,481.40
  4. Step 4: Simplify right side
    20,181.40x = 256,658,189.82
  5. Step 5: Solve for x
    x = 256,658,189.82/20,181.40
  6. Step 6: Final answer
    x = 12,717.56

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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.