Home / 12,821.80-19,233.30-4,057.42

Finding the Fourth Proportional to 12,821.80, 19,233.30 and 4,057.42

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Solution

The fourth proportional to 12,821.80, 19,233.30 and 4,057.42 is: 6,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.80 : 19,233.30 = 4,057.42 : x
  2. Step 2: Convert to fraction form
    12,821.80/19,233.30 = 4,057.42/x
  3. Step 3: Cross multiply
    12,821.80x = 19,233.30 × 4,057.42
  4. Step 4: Simplify right side
    12,821.80x = 78,037,576.09
  5. Step 5: Solve for x
    x = 78,037,576.09/12,821.80
  6. Step 6: Final answer
    x = 6,086.32

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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.