Home / 12,755.82-19,133.77-3,871.23

Finding the Fourth Proportional to 12,755.82, 19,133.77 and 3,871.23

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Solution

The fourth proportional to 12,755.82, 19,133.77 and 3,871.23 is: 5,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.82 : 19,133.77 = 3,871.23 : x
  2. Step 2: Convert to fraction form
    12,755.82/19,133.77 = 3,871.23/x
  3. Step 3: Cross multiply
    12,755.82x = 19,133.77 × 3,871.23
  4. Step 4: Simplify right side
    12,755.82x = 74,071,138.45
  5. Step 5: Solve for x
    x = 74,071,138.45/12,755.82
  6. Step 6: Final answer
    x = 5,806.85

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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.