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Finding the Fourth Proportional to 19,879.58, 27,403.49 and 16,843.49

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Solution

The fourth proportional to 19,879.58, 27,403.49 and 16,843.49 is: 23,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.58 : 27,403.49 = 16,843.49 : x
  2. Step 2: Convert to fraction form
    19,879.58/27,403.49 = 16,843.49/x
  3. Step 3: Cross multiply
    19,879.58x = 27,403.49 × 16,843.49
  4. Step 4: Simplify right side
    19,879.58x = 461,570,409.78
  5. Step 5: Solve for x
    x = 461,570,409.78/19,879.58
  6. Step 6: Final answer
    x = 23,218.32

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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.