Home / 10,081.26-13,912.38-5,605.20

Finding the Fourth Proportional to 10,081.26, 13,912.38 and 5,605.20

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Solution

The fourth proportional to 10,081.26, 13,912.38 and 5,605.20 is: 7,735.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.26 : 13,912.38 = 5,605.20 : x
  2. Step 2: Convert to fraction form
    10,081.26/13,912.38 = 5,605.20/x
  3. Step 3: Cross multiply
    10,081.26x = 13,912.38 × 5,605.20
  4. Step 4: Simplify right side
    10,081.26x = 77,981,672.38
  5. Step 5: Solve for x
    x = 77,981,672.38/10,081.26
  6. Step 6: Final answer
    x = 7,735.31

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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.