Home / 19,979.56-27,570.32-11,481.70

Finding the Fourth Proportional to 19,979.56, 27,570.32 and 11,481.70

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Solution

The fourth proportional to 19,979.56, 27,570.32 and 11,481.70 is: 15,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.56 : 27,570.32 = 11,481.70 : x
  2. Step 2: Convert to fraction form
    19,979.56/27,570.32 = 11,481.70/x
  3. Step 3: Cross multiply
    19,979.56x = 27,570.32 × 11,481.70
  4. Step 4: Simplify right side
    19,979.56x = 316,554,143.14
  5. Step 5: Solve for x
    x = 316,554,143.14/19,979.56
  6. Step 6: Final answer
    x = 15,843.90

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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.