Home / 22,261.82-30,720.99-12,190.15

Finding the Fourth Proportional to 22,261.82, 30,720.99 and 12,190.15

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Solution

The fourth proportional to 22,261.82, 30,720.99 and 12,190.15 is: 16,822.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,261.82 : 30,720.99 = 12,190.15 : x
  2. Step 2: Convert to fraction form
    22,261.82/30,720.99 = 12,190.15/x
  3. Step 3: Cross multiply
    22,261.82x = 30,720.99 × 12,190.15
  4. Step 4: Simplify right side
    22,261.82x = 374,493,445.16
  5. Step 5: Solve for x
    x = 374,493,445.16/22,261.82
  6. Step 6: Final answer
    x = 16,822.23

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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.