Home / 22,261.79-30,720.72-12,190.65

Finding the Fourth Proportional to 22,261.79, 30,720.72 and 12,190.65

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Solution

The fourth proportional to 22,261.79, 30,720.72 and 12,190.65 is: 16,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,261.79 : 30,720.72 = 12,190.65 : x
  2. Step 2: Convert to fraction form
    22,261.79/30,720.72 = 12,190.65/x
  3. Step 3: Cross multiply
    22,261.79x = 30,720.72 × 12,190.65
  4. Step 4: Simplify right side
    22,261.79x = 374,505,580.01
  5. Step 5: Solve for x
    x = 374,505,580.01/22,261.79
  6. Step 6: Final answer
    x = 16,822.80

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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.