Home / 22,189.94-33,285.21-12,391.57

Finding the Fourth Proportional to 22,189.94, 33,285.21 and 12,391.57

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Solution

The fourth proportional to 22,189.94, 33,285.21 and 12,391.57 is: 18,587.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,189.94 : 33,285.21 = 12,391.57 : x
  2. Step 2: Convert to fraction form
    22,189.94/33,285.21 = 12,391.57/x
  3. Step 3: Cross multiply
    22,189.94x = 33,285.21 × 12,391.57
  4. Step 4: Simplify right side
    22,189.94x = 412,456,009.68
  5. Step 5: Solve for x
    x = 412,456,009.68/22,189.94
  6. Step 6: Final answer
    x = 18,587.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.