Home / 12,679.22-19,020.65-3,914.82

Finding the Fourth Proportional to 12,679.22, 19,020.65 and 3,914.82

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Solution

The fourth proportional to 12,679.22, 19,020.65 and 3,914.82 is: 5,872.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.22 : 19,020.65 = 3,914.82 : x
  2. Step 2: Convert to fraction form
    12,679.22/19,020.65 = 3,914.82/x
  3. Step 3: Cross multiply
    12,679.22x = 19,020.65 × 3,914.82
  4. Step 4: Simplify right side
    12,679.22x = 74,462,401.46
  5. Step 5: Solve for x
    x = 74,462,401.46/12,679.22
  6. Step 6: Final answer
    x = 5,872.79

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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.