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Finding the Fourth Proportional to 18,305.80, 27,439.86 and 7,207.99

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Solution

The fourth proportional to 18,305.80, 27,439.86 and 7,207.99 is: 10,804.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.80 : 27,439.86 = 7,207.99 : x
  2. Step 2: Convert to fraction form
    18,305.80/27,439.86 = 7,207.99/x
  3. Step 3: Cross multiply
    18,305.80x = 27,439.86 × 7,207.99
  4. Step 4: Simplify right side
    18,305.80x = 197,786,194.91
  5. Step 5: Solve for x
    x = 197,786,194.91/18,305.80
  6. Step 6: Final answer
    x = 10,804.57

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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.