Home / 19,986.97-27,591.99-12,435.73

Finding the Fourth Proportional to 19,986.97, 27,591.99 and 12,435.73

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Solution

The fourth proportional to 19,986.97, 27,591.99 and 12,435.73 is: 17,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.97 : 27,591.99 = 12,435.73 : x
  2. Step 2: Convert to fraction form
    19,986.97/27,591.99 = 12,435.73/x
  3. Step 3: Cross multiply
    19,986.97x = 27,591.99 × 12,435.73
  4. Step 4: Simplify right side
    19,986.97x = 343,126,537.80
  5. Step 5: Solve for x
    x = 343,126,537.80/19,986.97
  6. Step 6: Final answer
    x = 17,167.51

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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.