Home / 12,786.20-19,182.48-10,163.60

Finding the Fourth Proportional to 12,786.20, 19,182.48 and 10,163.60

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Solution

The fourth proportional to 12,786.20, 19,182.48 and 10,163.60 is: 15,247.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.20 : 19,182.48 = 10,163.60 : x
  2. Step 2: Convert to fraction form
    12,786.20/19,182.48 = 10,163.60/x
  3. Step 3: Cross multiply
    12,786.20x = 19,182.48 × 10,163.60
  4. Step 4: Simplify right side
    12,786.20x = 194,963,053.73
  5. Step 5: Solve for x
    x = 194,963,053.73/12,786.20
  6. Step 6: Final answer
    x = 15,247.93

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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.