Home / 30,893.06-42,620.24-20,150.44

Finding the Fourth Proportional to 30,893.06, 42,620.24 and 20,150.44

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Solution

The fourth proportional to 30,893.06, 42,620.24 and 20,150.44 is: 27,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,893.06 : 42,620.24 = 20,150.44 : x
  2. Step 2: Convert to fraction form
    30,893.06/42,620.24 = 20,150.44/x
  3. Step 3: Cross multiply
    30,893.06x = 42,620.24 × 20,150.44
  4. Step 4: Simplify right side
    30,893.06x = 858,816,532.73
  5. Step 5: Solve for x
    x = 858,816,532.73/30,893.06
  6. Step 6: Final answer
    x = 27,799.66

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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.