Home / 19,724.16-27,221.92-11,224.64

Finding the Fourth Proportional to 19,724.16, 27,221.92 and 11,224.64

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Solution

The fourth proportional to 19,724.16, 27,221.92 and 11,224.64 is: 15,491.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,724.16 : 27,221.92 = 11,224.64 : x
  2. Step 2: Convert to fraction form
    19,724.16/27,221.92 = 11,224.64/x
  3. Step 3: Cross multiply
    19,724.16x = 27,221.92 × 11,224.64
  4. Step 4: Simplify right side
    19,724.16x = 305,556,087.94
  5. Step 5: Solve for x
    x = 305,556,087.94/19,724.16
  6. Step 6: Final answer
    x = 15,491.46

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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.