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Finding the Fourth Proportional to 18,574.27, 27,861.08 and 7,480.67

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Solution

The fourth proportional to 18,574.27, 27,861.08 and 7,480.67 is: 11,220.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.27 : 27,861.08 = 7,480.67 : x
  2. Step 2: Convert to fraction form
    18,574.27/27,861.08 = 7,480.67/x
  3. Step 3: Cross multiply
    18,574.27x = 27,861.08 × 7,480.67
  4. Step 4: Simplify right side
    18,574.27x = 208,419,633.68
  5. Step 5: Solve for x
    x = 208,419,633.68/18,574.27
  6. Step 6: Final answer
    x = 11,220.88

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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.