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Finding the Fourth Proportional to 16,739.80, 25,109.94 and 6,879.16

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Solution

The fourth proportional to 16,739.80, 25,109.94 and 6,879.16 is: 10,318.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,739.80 : 25,109.94 = 6,879.16 : x
  2. Step 2: Convert to fraction form
    16,739.80/25,109.94 = 6,879.16/x
  3. Step 3: Cross multiply
    16,739.80x = 25,109.94 × 6,879.16
  4. Step 4: Simplify right side
    16,739.80x = 172,735,294.85
  5. Step 5: Solve for x
    x = 172,735,294.85/16,739.80
  6. Step 6: Final answer
    x = 10,318.84

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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.