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Finding the Fourth Proportional to 15,250.70, 22,879.80 and 5,255.60

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Solution

The fourth proportional to 15,250.70, 22,879.80 and 5,255.60 is: 7,884.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,250.70 : 22,879.80 = 5,255.60 : x
  2. Step 2: Convert to fraction form
    15,250.70/22,879.80 = 5,255.60/x
  3. Step 3: Cross multiply
    15,250.70x = 22,879.80 × 5,255.60
  4. Step 4: Simplify right side
    15,250.70x = 120,247,076.88
  5. Step 5: Solve for x
    x = 120,247,076.88/15,250.70
  6. Step 6: Final answer
    x = 7,884.69

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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.