Home / 20,150.60-30,204.30-7,665.80

Finding the Fourth Proportional to 20,150.60, 30,204.30 and 7,665.80

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Solution

The fourth proportional to 20,150.60, 30,204.30 and 7,665.80 is: 11,490.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150.60 : 30,204.30 = 7,665.80 : x
  2. Step 2: Convert to fraction form
    20,150.60/30,204.30 = 7,665.80/x
  3. Step 3: Cross multiply
    20,150.60x = 30,204.30 × 7,665.80
  4. Step 4: Simplify right side
    20,150.60x = 231,540,122.94
  5. Step 5: Solve for x
    x = 231,540,122.94/20,150.60
  6. Step 6: Final answer
    x = 11,490.48

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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.