Home / 19,879.72-27,431.94-11,494.60

Finding the Fourth Proportional to 19,879.72, 27,431.94 and 11,494.60

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Solution

The fourth proportional to 19,879.72, 27,431.94 and 11,494.60 is: 15,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.72 : 27,431.94 = 11,494.60 : x
  2. Step 2: Convert to fraction form
    19,879.72/27,431.94 = 11,494.60/x
  3. Step 3: Cross multiply
    19,879.72x = 27,431.94 × 11,494.60
  4. Step 4: Simplify right side
    19,879.72x = 315,319,177.52
  5. Step 5: Solve for x
    x = 315,319,177.52/19,879.72
  6. Step 6: Final answer
    x = 15,861.35

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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.