Home / 18,519.63-27,785.94-5,372.79

Finding the Fourth Proportional to 18,519.63, 27,785.94 and 5,372.79

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Solution

The fourth proportional to 18,519.63, 27,785.94 and 5,372.79 is: 8,061.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.63 : 27,785.94 = 5,372.79 : x
  2. Step 2: Convert to fraction form
    18,519.63/27,785.94 = 5,372.79/x
  3. Step 3: Cross multiply
    18,519.63x = 27,785.94 × 5,372.79
  4. Step 4: Simplify right side
    18,519.63x = 149,288,020.57
  5. Step 5: Solve for x
    x = 149,288,020.57/18,519.63
  6. Step 6: Final answer
    x = 8,061.07

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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.