Home / 12,409.92-18,615.36-3,644.64

Finding the Fourth Proportional to 12,409.92, 18,615.36 and 3,644.64

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Solution

The fourth proportional to 12,409.92, 18,615.36 and 3,644.64 is: 5,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.92 : 18,615.36 = 3,644.64 : x
  2. Step 2: Convert to fraction form
    12,409.92/18,615.36 = 3,644.64/x
  3. Step 3: Cross multiply
    12,409.92x = 18,615.36 × 3,644.64
  4. Step 4: Simplify right side
    12,409.92x = 67,846,285.67
  5. Step 5: Solve for x
    x = 67,846,285.67/12,409.92
  6. Step 6: Final answer
    x = 5,467.10

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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.