Home / 22,261.44-30,720.62-12,189.80

Finding the Fourth Proportional to 22,261.44, 30,720.62 and 12,189.80

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Solution

The fourth proportional to 22,261.44, 30,720.62 and 12,189.80 is: 16,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,261.44 : 30,720.62 = 12,189.80 : x
  2. Step 2: Convert to fraction form
    22,261.44/30,720.62 = 12,189.80/x
  3. Step 3: Cross multiply
    22,261.44x = 30,720.62 × 12,189.80
  4. Step 4: Simplify right side
    22,261.44x = 374,478,320.95
  5. Step 5: Solve for x
    x = 374,478,320.95/22,261.44
  6. Step 6: Final answer
    x = 16,821.84

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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.