Home / 27,745.41-38,286.69-15,806.55

Finding the Fourth Proportional to 27,745.41, 38,286.69 and 15,806.55

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Solution

The fourth proportional to 27,745.41, 38,286.69 and 15,806.55 is: 21,811.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,745.41 : 38,286.69 = 15,806.55 : x
  2. Step 2: Convert to fraction form
    27,745.41/38,286.69 = 15,806.55/x
  3. Step 3: Cross multiply
    27,745.41x = 38,286.69 × 15,806.55
  4. Step 4: Simplify right side
    27,745.41x = 605,180,479.82
  5. Step 5: Solve for x
    x = 605,180,479.82/27,745.41
  6. Step 6: Final answer
    x = 21,811.91

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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.