Home / 21,550.26-29,739.15-12,118.89

Finding the Fourth Proportional to 21,550.26, 29,739.15 and 12,118.89

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Solution

The fourth proportional to 21,550.26, 29,739.15 and 12,118.89 is: 16,723.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,550.26 : 29,739.15 = 12,118.89 : x
  2. Step 2: Convert to fraction form
    21,550.26/29,739.15 = 12,118.89/x
  3. Step 3: Cross multiply
    21,550.26x = 29,739.15 × 12,118.89
  4. Step 4: Simplify right side
    21,550.26x = 360,405,487.54
  5. Step 5: Solve for x
    x = 360,405,487.54/21,550.26
  6. Step 6: Final answer
    x = 16,723.95

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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.