Home / 12,430.68-18,639.60-3,664.48

Finding the Fourth Proportional to 12,430.68, 18,639.60 and 3,664.48

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Solution

The fourth proportional to 12,430.68, 18,639.60 and 3,664.48 is: 5,494.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.68 : 18,639.60 = 3,664.48 : x
  2. Step 2: Convert to fraction form
    12,430.68/18,639.60 = 3,664.48/x
  3. Step 3: Cross multiply
    12,430.68x = 18,639.60 × 3,664.48
  4. Step 4: Simplify right side
    12,430.68x = 68,304,441.41
  5. Step 5: Solve for x
    x = 68,304,441.41/12,430.68
  6. Step 6: Final answer
    x = 5,494.83

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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.