Home / 12,436.80-18,650.88-3,669.36

Finding the Fourth Proportional to 12,436.80, 18,650.88 and 3,669.36

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Solution

The fourth proportional to 12,436.80, 18,650.88 and 3,669.36 is: 5,502.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.80 : 18,650.88 = 3,669.36 : x
  2. Step 2: Convert to fraction form
    12,436.80/18,650.88 = 3,669.36/x
  3. Step 3: Cross multiply
    12,436.80x = 18,650.88 × 3,669.36
  4. Step 4: Simplify right side
    12,436.80x = 68,436,793.04
  5. Step 5: Solve for x
    x = 68,436,793.04/12,436.80
  6. Step 6: Final answer
    x = 5,502.77

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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.