Home / 13,896.99-19,179.71-8,231.30

Finding the Fourth Proportional to 13,896.99, 19,179.71 and 8,231.30

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Solution

The fourth proportional to 13,896.99, 19,179.71 and 8,231.30 is: 11,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.99 : 19,179.71 = 8,231.30 : x
  2. Step 2: Convert to fraction form
    13,896.99/19,179.71 = 8,231.30/x
  3. Step 3: Cross multiply
    13,896.99x = 19,179.71 × 8,231.30
  4. Step 4: Simplify right side
    13,896.99x = 157,873,946.92
  5. Step 5: Solve for x
    x = 157,873,946.92/13,896.99
  6. Step 6: Final answer
    x = 11,360.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.