Home / 12,811.86-19,192.20-10,183.80

Finding the Fourth Proportional to 12,811.86, 19,192.20 and 10,183.80

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Solution

The fourth proportional to 12,811.86, 19,192.20 and 10,183.80 is: 15,255.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.86 : 19,192.20 = 10,183.80 : x
  2. Step 2: Convert to fraction form
    12,811.86/19,192.20 = 10,183.80/x
  3. Step 3: Cross multiply
    12,811.86x = 19,192.20 × 10,183.80
  4. Step 4: Simplify right side
    12,811.86x = 195,449,526.36
  5. Step 5: Solve for x
    x = 195,449,526.36/12,811.86
  6. Step 6: Final answer
    x = 15,255.36

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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.