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Finding the Fourth Proportional to 20,047.26, 30,077.79 and 8,961.60

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Solution

The fourth proportional to 20,047.26, 30,077.79 and 8,961.60 is: 13,445.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.26 : 30,077.79 = 8,961.60 : x
  2. Step 2: Convert to fraction form
    20,047.26/30,077.79 = 8,961.60/x
  3. Step 3: Cross multiply
    20,047.26x = 30,077.79 × 8,961.60
  4. Step 4: Simplify right side
    20,047.26x = 269,545,122.86
  5. Step 5: Solve for x
    x = 269,545,122.86/20,047.26
  6. Step 6: Final answer
    x = 13,445.48

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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.