Home / 12,576.78-18,865.26-3,812.34

Finding the Fourth Proportional to 12,576.78, 18,865.26 and 3,812.34

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Solution

The fourth proportional to 12,576.78, 18,865.26 and 3,812.34 is: 5,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.78 : 18,865.26 = 3,812.34 : x
  2. Step 2: Convert to fraction form
    12,576.78/18,865.26 = 3,812.34/x
  3. Step 3: Cross multiply
    12,576.78x = 18,865.26 × 3,812.34
  4. Step 4: Simplify right side
    12,576.78x = 71,920,785.31
  5. Step 5: Solve for x
    x = 71,920,785.31/12,576.78
  6. Step 6: Final answer
    x = 5,718.54

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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.