Home / 12,435.20-18,653.76-3,669.92

Finding the Fourth Proportional to 12,435.20, 18,653.76 and 3,669.92

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Solution

The fourth proportional to 12,435.20, 18,653.76 and 3,669.92 is: 5,505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.20 : 18,653.76 = 3,669.92 : x
  2. Step 2: Convert to fraction form
    12,435.20/18,653.76 = 3,669.92/x
  3. Step 3: Cross multiply
    12,435.20x = 18,653.76 × 3,669.92
  4. Step 4: Simplify right side
    12,435.20x = 68,457,806.90
  5. Step 5: Solve for x
    x = 68,457,806.90/12,435.20
  6. Step 6: Final answer
    x = 5,505.16

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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.