Home / 27,979.68-38,611.26-15,882.42

Finding the Fourth Proportional to 27,979.68, 38,611.26 and 15,882.42

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Solution

The fourth proportional to 27,979.68, 38,611.26 and 15,882.42 is: 21,917.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.68 : 38,611.26 = 15,882.42 : x
  2. Step 2: Convert to fraction form
    27,979.68/38,611.26 = 15,882.42/x
  3. Step 3: Cross multiply
    27,979.68x = 38,611.26 × 15,882.42
  4. Step 4: Simplify right side
    27,979.68x = 613,240,248.05
  5. Step 5: Solve for x
    x = 613,240,248.05/27,979.68
  6. Step 6: Final answer
    x = 21,917.34

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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.