Home / 27,876.36-38,469.39-15,129.54

Finding the Fourth Proportional to 27,876.36, 38,469.39 and 15,129.54

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Solution

The fourth proportional to 27,876.36, 38,469.39 and 15,129.54 is: 20,878.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.36 : 38,469.39 = 15,129.54 : x
  2. Step 2: Convert to fraction form
    27,876.36/38,469.39 = 15,129.54/x
  3. Step 3: Cross multiply
    27,876.36x = 38,469.39 × 15,129.54
  4. Step 4: Simplify right side
    27,876.36x = 582,024,174.78
  5. Step 5: Solve for x
    x = 582,024,174.78/27,876.36
  6. Step 6: Final answer
    x = 20,878.77

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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.