Home / 19,721.60-27,215.96-11,224.37

Finding the Fourth Proportional to 19,721.60, 27,215.96 and 11,224.37

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Solution

The fourth proportional to 19,721.60, 27,215.96 and 11,224.37 is: 15,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.60 : 27,215.96 = 11,224.37 : x
  2. Step 2: Convert to fraction form
    19,721.60/27,215.96 = 11,224.37/x
  3. Step 3: Cross multiply
    19,721.60x = 27,215.96 × 11,224.37
  4. Step 4: Simplify right side
    19,721.60x = 305,481,928.83
  5. Step 5: Solve for x
    x = 305,481,928.83/19,721.60
  6. Step 6: Final answer
    x = 15,489.71

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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.