Home / 19,662.75-27,136.08-12,107.21

Finding the Fourth Proportional to 19,662.75, 27,136.08 and 12,107.21

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Solution

The fourth proportional to 19,662.75, 27,136.08 and 12,107.21 is: 16,708.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.75 : 27,136.08 = 12,107.21 : x
  2. Step 2: Convert to fraction form
    19,662.75/27,136.08 = 12,107.21/x
  3. Step 3: Cross multiply
    19,662.75x = 27,136.08 × 12,107.21
  4. Step 4: Simplify right side
    19,662.75x = 328,542,083.46
  5. Step 5: Solve for x
    x = 328,542,083.46/19,662.75
  6. Step 6: Final answer
    x = 16,708.86

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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.