Home / 28,738.80-39,659.40-16,163.64

Finding the Fourth Proportional to 28,738.80, 39,659.40 and 16,163.64

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Solution

The fourth proportional to 28,738.80, 39,659.40 and 16,163.64 is: 22,305.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.80 : 39,659.40 = 16,163.64 : x
  2. Step 2: Convert to fraction form
    28,738.80/39,659.40 = 16,163.64/x
  3. Step 3: Cross multiply
    28,738.80x = 39,659.40 × 16,163.64
  4. Step 4: Simplify right side
    28,738.80x = 641,040,264.22
  5. Step 5: Solve for x
    x = 641,040,264.22/28,738.80
  6. Step 6: Final answer
    x = 22,305.74

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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.