Home / 19,986.62-27,584.80-11,921.30

Finding the Fourth Proportional to 19,986.62, 27,584.80 and 11,921.30

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Solution

The fourth proportional to 19,986.62, 27,584.80 and 11,921.30 is: 16,453.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.62 : 27,584.80 = 11,921.30 : x
  2. Step 2: Convert to fraction form
    19,986.62/27,584.80 = 11,921.30/x
  3. Step 3: Cross multiply
    19,986.62x = 27,584.80 × 11,921.30
  4. Step 4: Simplify right side
    19,986.62x = 328,846,676.24
  5. Step 5: Solve for x
    x = 328,846,676.24/19,986.62
  6. Step 6: Final answer
    x = 16,453.34

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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.