Home / 12,576.74-18,865.10-3,216.78

Finding the Fourth Proportional to 12,576.74, 18,865.10 and 3,216.78

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Solution

The fourth proportional to 12,576.74, 18,865.10 and 3,216.78 is: 4,825.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.74 : 18,865.10 = 3,216.78 : x
  2. Step 2: Convert to fraction form
    12,576.74/18,865.10 = 3,216.78/x
  3. Step 3: Cross multiply
    12,576.74x = 18,865.10 × 3,216.78
  4. Step 4: Simplify right side
    12,576.74x = 60,684,782.05
  5. Step 5: Solve for x
    x = 60,684,782.05/12,576.74
  6. Step 6: Final answer
    x = 4,825.16

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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.