Home / 12,422.21-17,142.55-6,756.96

Finding the Fourth Proportional to 12,422.21, 17,142.55 and 6,756.96

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Solution

The fourth proportional to 12,422.21, 17,142.55 and 6,756.96 is: 9,324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.21 : 17,142.55 = 6,756.96 : x
  2. Step 2: Convert to fraction form
    12,422.21/17,142.55 = 6,756.96/x
  3. Step 3: Cross multiply
    12,422.21x = 17,142.55 × 6,756.96
  4. Step 4: Simplify right side
    12,422.21x = 115,831,524.65
  5. Step 5: Solve for x
    x = 115,831,524.65/12,422.21
  6. Step 6: Final answer
    x = 9,324.55

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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.