Home / 12,189.25-16,821.49-6,884.85

Finding the Fourth Proportional to 12,189.25, 16,821.49 and 6,884.85

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Solution

The fourth proportional to 12,189.25, 16,821.49 and 6,884.85 is: 9,501.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.25 : 16,821.49 = 6,884.85 : x
  2. Step 2: Convert to fraction form
    12,189.25/16,821.49 = 6,884.85/x
  3. Step 3: Cross multiply
    12,189.25x = 16,821.49 × 6,884.85
  4. Step 4: Simplify right side
    12,189.25x = 115,813,435.43
  5. Step 5: Solve for x
    x = 115,813,435.43/12,189.25
  6. Step 6: Final answer
    x = 9,501.28

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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.