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Finding the Fourth Proportional to 18,570.96, 27,850.92 and 5,419.80

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Solution

The fourth proportional to 18,570.96, 27,850.92 and 5,419.80 is: 8,128.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.96 : 27,850.92 = 5,419.80 : x
  2. Step 2: Convert to fraction form
    18,570.96/27,850.92 = 5,419.80/x
  3. Step 3: Cross multiply
    18,570.96x = 27,850.92 × 5,419.80
  4. Step 4: Simplify right side
    18,570.96x = 150,946,416.22
  5. Step 5: Solve for x
    x = 150,946,416.22/18,570.96
  6. Step 6: Final answer
    x = 8,128.09

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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.