Home / 12,680.31-19,020.33-3,914.22

Finding the Fourth Proportional to 12,680.31, 19,020.33 and 3,914.22

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Solution

The fourth proportional to 12,680.31, 19,020.33 and 3,914.22 is: 5,871.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.31 : 19,020.33 = 3,914.22 : x
  2. Step 2: Convert to fraction form
    12,680.31/19,020.33 = 3,914.22/x
  3. Step 3: Cross multiply
    12,680.31x = 19,020.33 × 3,914.22
  4. Step 4: Simplify right side
    12,680.31x = 74,449,756.09
  5. Step 5: Solve for x
    x = 74,449,756.09/12,680.31
  6. Step 6: Final answer
    x = 5,871.29

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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.