Home / 12,821.90-19,231.22-4,057.70

Finding the Fourth Proportional to 12,821.90, 19,231.22 and 4,057.70

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Solution

The fourth proportional to 12,821.90, 19,231.22 and 4,057.70 is: 6,086.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.90 : 19,231.22 = 4,057.70 : x
  2. Step 2: Convert to fraction form
    12,821.90/19,231.22 = 4,057.70/x
  3. Step 3: Cross multiply
    12,821.90x = 19,231.22 × 4,057.70
  4. Step 4: Simplify right side
    12,821.90x = 78,034,521.39
  5. Step 5: Solve for x
    x = 78,034,521.39/12,821.90
  6. Step 6: Final answer
    x = 6,086.03

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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.