Home / 27,640.11-38,148.80-19,251.75

Finding the Fourth Proportional to 27,640.11, 38,148.80 and 19,251.75

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Solution

The fourth proportional to 27,640.11, 38,148.80 and 19,251.75 is: 26,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.11 : 38,148.80 = 19,251.75 : x
  2. Step 2: Convert to fraction form
    27,640.11/38,148.80 = 19,251.75/x
  3. Step 3: Cross multiply
    27,640.11x = 38,148.80 × 19,251.75
  4. Step 4: Simplify right side
    27,640.11x = 734,431,064.14
  5. Step 5: Solve for x
    x = 734,431,064.14/27,640.11
  6. Step 6: Final answer
    x = 26,571.21

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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.