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Finding the Fourth Proportional to 20,164.86, 30,242.43 and 6,313.86

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Solution

The fourth proportional to 20,164.86, 30,242.43 and 6,313.86 is: 9,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,164.86 : 30,242.43 = 6,313.86 : x
  2. Step 2: Convert to fraction form
    20,164.86/30,242.43 = 6,313.86/x
  3. Step 3: Cross multiply
    20,164.86x = 30,242.43 × 6,313.86
  4. Step 4: Simplify right side
    20,164.86x = 190,946,469.08
  5. Step 5: Solve for x
    x = 190,946,469.08/20,164.86
  6. Step 6: Final answer
    x = 9,469.27

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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.