Home / 12,786.36-19,173.78-7,523.88

Finding the Fourth Proportional to 12,786.36, 19,173.78 and 7,523.88

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Solution

The fourth proportional to 12,786.36, 19,173.78 and 7,523.88 is: 11,282.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.36 : 19,173.78 = 7,523.88 : x
  2. Step 2: Convert to fraction form
    12,786.36/19,173.78 = 7,523.88/x
  3. Step 3: Cross multiply
    12,786.36x = 19,173.78 × 7,523.88
  4. Step 4: Simplify right side
    12,786.36x = 144,261,219.87
  5. Step 5: Solve for x
    x = 144,261,219.87/12,786.36
  6. Step 6: Final answer
    x = 11,282.43

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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.