Home / 28,811.40-39,745.95-16,867.38

Finding the Fourth Proportional to 28,811.40, 39,745.95 and 16,867.38

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Solution

The fourth proportional to 28,811.40, 39,745.95 and 16,867.38 is: 23,268.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.40 : 39,745.95 = 16,867.38 : x
  2. Step 2: Convert to fraction form
    28,811.40/39,745.95 = 16,867.38/x
  3. Step 3: Cross multiply
    28,811.40x = 39,745.95 × 16,867.38
  4. Step 4: Simplify right side
    28,811.40x = 670,410,042.11
  5. Step 5: Solve for x
    x = 670,410,042.11/28,811.40
  6. Step 6: Final answer
    x = 23,268.92

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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.