Home / 21,550.14-29,738.88-12,118.71

Finding the Fourth Proportional to 21,550.14, 29,738.88 and 12,118.71

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Solution

The fourth proportional to 21,550.14, 29,738.88 and 12,118.71 is: 16,723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,550.14 : 29,738.88 = 12,118.71 : x
  2. Step 2: Convert to fraction form
    21,550.14/29,738.88 = 12,118.71/x
  3. Step 3: Cross multiply
    21,550.14x = 29,738.88 × 12,118.71
  4. Step 4: Simplify right side
    21,550.14x = 360,396,862.44
  5. Step 5: Solve for x
    x = 360,396,862.44/21,550.14
  6. Step 6: Final answer
    x = 16,723.64

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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.