Home / 19,699.30-27,198.72-15,939.14

Finding the Fourth Proportional to 19,699.30, 27,198.72 and 15,939.14

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Solution

The fourth proportional to 19,699.30, 27,198.72 and 15,939.14 is: 22,007.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.30 : 27,198.72 = 15,939.14 : x
  2. Step 2: Convert to fraction form
    19,699.30/27,198.72 = 15,939.14/x
  3. Step 3: Cross multiply
    19,699.30x = 27,198.72 × 15,939.14
  4. Step 4: Simplify right side
    19,699.30x = 433,524,205.90
  5. Step 5: Solve for x
    x = 433,524,205.90/19,699.30
  6. Step 6: Final answer
    x = 22,007.09

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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.