Home / 22,725.75-31,361.67-12,789.75

Finding the Fourth Proportional to 22,725.75, 31,361.67 and 12,789.75

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Solution

The fourth proportional to 22,725.75, 31,361.67 and 12,789.75 is: 17,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,725.75 : 31,361.67 = 12,789.75 : x
  2. Step 2: Convert to fraction form
    22,725.75/31,361.67 = 12,789.75/x
  3. Step 3: Cross multiply
    22,725.75x = 31,361.67 × 12,789.75
  4. Step 4: Simplify right side
    22,725.75x = 401,107,918.88
  5. Step 5: Solve for x
    x = 401,107,918.88/22,725.75
  6. Step 6: Final answer
    x = 17,649.93

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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.