Home / 19,942.38-27,522.09-10,991.70

Finding the Fourth Proportional to 19,942.38, 27,522.09 and 10,991.70

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Solution

The fourth proportional to 19,942.38, 27,522.09 and 10,991.70 is: 15,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.38 : 27,522.09 = 10,991.70 : x
  2. Step 2: Convert to fraction form
    19,942.38/27,522.09 = 10,991.70/x
  3. Step 3: Cross multiply
    19,942.38x = 27,522.09 × 10,991.70
  4. Step 4: Simplify right side
    19,942.38x = 302,514,556.65
  5. Step 5: Solve for x
    x = 302,514,556.65/19,942.38
  6. Step 6: Final answer
    x = 15,169.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.