Home / 12,822.96-19,236.77-3,938.10

Finding the Fourth Proportional to 12,822.96, 19,236.77 and 3,938.10

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Solution

The fourth proportional to 12,822.96, 19,236.77 and 3,938.10 is: 5,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,822.96 : 19,236.77 = 3,938.10 : x
  2. Step 2: Convert to fraction form
    12,822.96/19,236.77 = 3,938.10/x
  3. Step 3: Cross multiply
    12,822.96x = 19,236.77 × 3,938.10
  4. Step 4: Simplify right side
    12,822.96x = 75,756,323.94
  5. Step 5: Solve for x
    x = 75,756,323.94/12,822.96
  6. Step 6: Final answer
    x = 5,907.87

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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.