Home / 19,976.12-27,570.30-11,910.80

Finding the Fourth Proportional to 19,976.12, 27,570.30 and 11,910.80

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Solution

The fourth proportional to 19,976.12, 27,570.30 and 11,910.80 is: 16,438.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.12 : 27,570.30 = 11,910.80 : x
  2. Step 2: Convert to fraction form
    19,976.12/27,570.30 = 11,910.80/x
  3. Step 3: Cross multiply
    19,976.12x = 27,570.30 × 11,910.80
  4. Step 4: Simplify right side
    19,976.12x = 328,384,329.24
  5. Step 5: Solve for x
    x = 328,384,329.24/19,976.12
  6. Step 6: Final answer
    x = 16,438.84

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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.