Home / 20,179.20-30,261.60-7,695.96

Finding the Fourth Proportional to 20,179.20, 30,261.60 and 7,695.96

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Solution

The fourth proportional to 20,179.20, 30,261.60 and 7,695.96 is: 11,541.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.20 : 30,261.60 = 7,695.96 : x
  2. Step 2: Convert to fraction form
    20,179.20/30,261.60 = 7,695.96/x
  3. Step 3: Cross multiply
    20,179.20x = 30,261.60 × 7,695.96
  4. Step 4: Simplify right side
    20,179.20x = 232,892,063.14
  5. Step 5: Solve for x
    x = 232,892,063.14/20,179.20
  6. Step 6: Final answer
    x = 11,541.19

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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.