Home / 21,982.58-30,331.97-12,292.22

Finding the Fourth Proportional to 21,982.58, 30,331.97 and 12,292.22

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Solution

The fourth proportional to 21,982.58, 30,331.97 and 12,292.22 is: 16,961.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.58 : 30,331.97 = 12,292.22 : x
  2. Step 2: Convert to fraction form
    21,982.58/30,331.97 = 12,292.22/x
  3. Step 3: Cross multiply
    21,982.58x = 30,331.97 × 12,292.22
  4. Step 4: Simplify right side
    21,982.58x = 372,847,081.25
  5. Step 5: Solve for x
    x = 372,847,081.25/21,982.58
  6. Step 6: Final answer
    x = 16,961.02

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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.