Home / 18,555.57-27,818.72-9,198.81

Finding the Fourth Proportional to 18,555.57, 27,818.72 and 9,198.81

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Solution

The fourth proportional to 18,555.57, 27,818.72 and 9,198.81 is: 13,790.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.57 : 27,818.72 = 9,198.81 : x
  2. Step 2: Convert to fraction form
    18,555.57/27,818.72 = 9,198.81/x
  3. Step 3: Cross multiply
    18,555.57x = 27,818.72 × 9,198.81
  4. Step 4: Simplify right side
    18,555.57x = 255,899,073.73
  5. Step 5: Solve for x
    x = 255,899,073.73/18,555.57
  6. Step 6: Final answer
    x = 13,790.96

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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.