Home / 13,721.96-18,922.46-11,195.97

Finding the Fourth Proportional to 13,721.96, 18,922.46 and 11,195.97

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Solution

The fourth proportional to 13,721.96, 18,922.46 and 11,195.97 is: 15,439.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.96 : 18,922.46 = 11,195.97 : x
  2. Step 2: Convert to fraction form
    13,721.96/18,922.46 = 11,195.97/x
  3. Step 3: Cross multiply
    13,721.96x = 18,922.46 × 11,195.97
  4. Step 4: Simplify right side
    13,721.96x = 211,855,238.51
  5. Step 5: Solve for x
    x = 211,855,238.51/13,721.96
  6. Step 6: Final answer
    x = 15,439.14

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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.