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Finding the Fourth Proportional to 18,574.26, 27,861.09 and 7,480.68

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Solution

The fourth proportional to 18,574.26, 27,861.09 and 7,480.68 is: 11,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.26 : 27,861.09 = 7,480.68 : x
  2. Step 2: Convert to fraction form
    18,574.26/27,861.09 = 7,480.68/x
  3. Step 3: Cross multiply
    18,574.26x = 27,861.09 × 7,480.68
  4. Step 4: Simplify right side
    18,574.26x = 208,419,898.74
  5. Step 5: Solve for x
    x = 208,419,898.74/18,574.26
  6. Step 6: Final answer
    x = 11,220.90

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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.