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Finding the Fourth Proportional to 19,388.80, 29,058.39 and 16,879.75

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Solution

The fourth proportional to 19,388.80, 29,058.39 and 16,879.75 is: 25,298.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.80 : 29,058.39 = 16,879.75 : x
  2. Step 2: Convert to fraction form
    19,388.80/29,058.39 = 16,879.75/x
  3. Step 3: Cross multiply
    19,388.80x = 29,058.39 × 16,879.75
  4. Step 4: Simplify right side
    19,388.80x = 490,498,285.96
  5. Step 5: Solve for x
    x = 490,498,285.96/19,388.80
  6. Step 6: Final answer
    x = 25,298.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.