Home / 27,884.97-38,480.40-15,137.55

Finding the Fourth Proportional to 27,884.97, 38,480.40 and 15,137.55

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Solution

The fourth proportional to 27,884.97, 38,480.40 and 15,137.55 is: 20,889.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,884.97 : 38,480.40 = 15,137.55 : x
  2. Step 2: Convert to fraction form
    27,884.97/38,480.40 = 15,137.55/x
  3. Step 3: Cross multiply
    27,884.97x = 38,480.40 × 15,137.55
  4. Step 4: Simplify right side
    27,884.97x = 582,498,979.02
  5. Step 5: Solve for x
    x = 582,498,979.02/27,884.97
  6. Step 6: Final answer
    x = 20,889.35

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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.