Home / 19,979.88-27,571.41-11,803.38

Finding the Fourth Proportional to 19,979.88, 27,571.41 and 11,803.38

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Solution

The fourth proportional to 19,979.88, 27,571.41 and 11,803.38 is: 16,288.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.88 : 27,571.41 = 11,803.38 : x
  2. Step 2: Convert to fraction form
    19,979.88/27,571.41 = 11,803.38/x
  3. Step 3: Cross multiply
    19,979.88x = 27,571.41 × 11,803.38
  4. Step 4: Simplify right side
    19,979.88x = 325,435,829.37
  5. Step 5: Solve for x
    x = 325,435,829.37/19,979.88
  6. Step 6: Final answer
    x = 16,288.18

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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.