Home / 15,150.43-20,906.80-8,435.80

Finding the Fourth Proportional to 15,150.43, 20,906.80 and 8,435.80

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Solution

The fourth proportional to 15,150.43, 20,906.80 and 8,435.80 is: 11,640.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.43 : 20,906.80 = 8,435.80 : x
  2. Step 2: Convert to fraction form
    15,150.43/20,906.80 = 8,435.80/x
  3. Step 3: Cross multiply
    15,150.43x = 20,906.80 × 8,435.80
  4. Step 4: Simplify right side
    15,150.43x = 176,365,583.44
  5. Step 5: Solve for x
    x = 176,365,583.44/15,150.43
  6. Step 6: Final answer
    x = 11,640.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.