Home / 12,786.77-19,180.36-3,902.29

Finding the Fourth Proportional to 12,786.77, 19,180.36 and 3,902.29

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Solution

The fourth proportional to 12,786.77, 19,180.36 and 3,902.29 is: 5,853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.77 : 19,180.36 = 3,902.29 : x
  2. Step 2: Convert to fraction form
    12,786.77/19,180.36 = 3,902.29/x
  3. Step 3: Cross multiply
    12,786.77x = 19,180.36 × 3,902.29
  4. Step 4: Simplify right side
    12,786.77x = 74,847,231.12
  5. Step 5: Solve for x
    x = 74,847,231.12/12,786.77
  6. Step 6: Final answer
    x = 5,853.49

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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.