Home / 19,190.60-28,721.10-16,857.80

Finding the Fourth Proportional to 19,190.60, 28,721.10 and 16,857.80

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Solution

The fourth proportional to 19,190.60, 28,721.10 and 16,857.80 is: 25,229.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190.60 : 28,721.10 = 16,857.80 : x
  2. Step 2: Convert to fraction form
    19,190.60/28,721.10 = 16,857.80/x
  3. Step 3: Cross multiply
    19,190.60x = 28,721.10 × 16,857.80
  4. Step 4: Simplify right side
    19,190.60x = 484,174,559.58
  5. Step 5: Solve for x
    x = 484,174,559.58/19,190.60
  6. Step 6: Final answer
    x = 25,229.78

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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.