Home / 17,121.38-25,605.05-13,119.71

Finding the Fourth Proportional to 17,121.38, 25,605.05 and 13,119.71

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Solution

The fourth proportional to 17,121.38, 25,605.05 and 13,119.71 is: 19,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.38 : 25,605.05 = 13,119.71 : x
  2. Step 2: Convert to fraction form
    17,121.38/25,605.05 = 13,119.71/x
  3. Step 3: Cross multiply
    17,121.38x = 25,605.05 × 13,119.71
  4. Step 4: Simplify right side
    17,121.38x = 335,930,636.91
  5. Step 5: Solve for x
    x = 335,930,636.91/17,121.38
  6. Step 6: Final answer
    x = 19,620.54

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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.