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Finding the Fourth Proportional to 16,993.80, 25,376.18 and 13,879.88

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Solution

The fourth proportional to 16,993.80, 25,376.18 and 13,879.88 is: 20,726.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,993.80 : 25,376.18 = 13,879.88 : x
  2. Step 2: Convert to fraction form
    16,993.80/25,376.18 = 13,879.88/x
  3. Step 3: Cross multiply
    16,993.80x = 25,376.18 × 13,879.88
  4. Step 4: Simplify right side
    16,993.80x = 352,218,333.26
  5. Step 5: Solve for x
    x = 352,218,333.26/16,993.80
  6. Step 6: Final answer
    x = 20,726.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.