Home / 19,721.48-27,215.78-11,224.24

Finding the Fourth Proportional to 19,721.48, 27,215.78 and 11,224.24

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Solution

The fourth proportional to 19,721.48, 27,215.78 and 11,224.24 is: 15,489.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.48 : 27,215.78 = 11,224.24 : x
  2. Step 2: Convert to fraction form
    19,721.48/27,215.78 = 11,224.24/x
  3. Step 3: Cross multiply
    19,721.48x = 27,215.78 × 11,224.24
  4. Step 4: Simplify right side
    19,721.48x = 305,476,589.01
  5. Step 5: Solve for x
    x = 305,476,589.01/19,721.48
  6. Step 6: Final answer
    x = 15,489.54

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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.