Home / 12,821.94-19,235.67-3,937.29

Finding the Fourth Proportional to 12,821.94, 19,235.67 and 3,937.29

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Solution

The fourth proportional to 12,821.94, 19,235.67 and 3,937.29 is: 5,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.94 : 19,235.67 = 3,937.29 : x
  2. Step 2: Convert to fraction form
    12,821.94/19,235.67 = 3,937.29/x
  3. Step 3: Cross multiply
    12,821.94x = 19,235.67 × 3,937.29
  4. Step 4: Simplify right side
    12,821.94x = 75,736,411.13
  5. Step 5: Solve for x
    x = 75,736,411.13/12,821.94
  6. Step 6: Final answer
    x = 5,906.78

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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.