Home / 19,879.42-27,431.89-11,702.16

Finding the Fourth Proportional to 19,879.42, 27,431.89 and 11,702.16

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Solution

The fourth proportional to 19,879.42, 27,431.89 and 11,702.16 is: 16,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.42 : 27,431.89 = 11,702.16 : x
  2. Step 2: Convert to fraction form
    19,879.42/27,431.89 = 11,702.16/x
  3. Step 3: Cross multiply
    19,879.42x = 27,431.89 × 11,702.16
  4. Step 4: Simplify right side
    19,879.42x = 321,012,365.88
  5. Step 5: Solve for x
    x = 321,012,365.88/19,879.42
  6. Step 6: Final answer
    x = 16,147.97

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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.