Home / 12,755.37-19,135.77-3,990.96

Finding the Fourth Proportional to 12,755.37, 19,135.77 and 3,990.96

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Solution

The fourth proportional to 12,755.37, 19,135.77 and 3,990.96 is: 5,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.37 : 19,135.77 = 3,990.96 : x
  2. Step 2: Convert to fraction form
    12,755.37/19,135.77 = 3,990.96/x
  3. Step 3: Cross multiply
    12,755.37x = 19,135.77 × 3,990.96
  4. Step 4: Simplify right side
    12,755.37x = 76,370,092.64
  5. Step 5: Solve for x
    x = 76,370,092.64/12,755.37
  6. Step 6: Final answer
    x = 5,987.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.