Home / 12,655.46-18,982.44-3,890.31

Finding the Fourth Proportional to 12,655.46, 18,982.44 and 3,890.31

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Solution

The fourth proportional to 12,655.46, 18,982.44 and 3,890.31 is: 5,835.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.46 : 18,982.44 = 3,890.31 : x
  2. Step 2: Convert to fraction form
    12,655.46/18,982.44 = 3,890.31/x
  3. Step 3: Cross multiply
    12,655.46x = 18,982.44 × 3,890.31
  4. Step 4: Simplify right side
    12,655.46x = 73,847,576.16
  5. Step 5: Solve for x
    x = 73,847,576.16/12,655.46
  6. Step 6: Final answer
    x = 5,835.24

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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.