Home / 28,028.80-38,678.20-16,091.36

Finding the Fourth Proportional to 28,028.80, 38,678.20 and 16,091.36

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Solution

The fourth proportional to 28,028.80, 38,678.20 and 16,091.36 is: 22,205.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.80 : 38,678.20 = 16,091.36 : x
  2. Step 2: Convert to fraction form
    28,028.80/38,678.20 = 16,091.36/x
  3. Step 3: Cross multiply
    28,028.80x = 38,678.20 × 16,091.36
  4. Step 4: Simplify right side
    28,028.80x = 622,384,840.35
  5. Step 5: Solve for x
    x = 622,384,840.35/28,028.80
  6. Step 6: Final answer
    x = 22,205.19

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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.