Home / 21,865.88-30,174.58-12,175.27

Finding the Fourth Proportional to 21,865.88, 30,174.58 and 12,175.27

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Solution

The fourth proportional to 21,865.88, 30,174.58 and 12,175.27 is: 16,801.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.88 : 30,174.58 = 12,175.27 : x
  2. Step 2: Convert to fraction form
    21,865.88/30,174.58 = 12,175.27/x
  3. Step 3: Cross multiply
    21,865.88x = 30,174.58 × 12,175.27
  4. Step 4: Simplify right side
    21,865.88x = 367,383,570.41
  5. Step 5: Solve for x
    x = 367,383,570.41/21,865.88
  6. Step 6: Final answer
    x = 16,801.68

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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.