Home / 13,678.61-20,517.91-4,325.19

Finding the Fourth Proportional to 13,678.61, 20,517.91 and 4,325.19

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Solution

The fourth proportional to 13,678.61, 20,517.91 and 4,325.19 is: 6,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.61 : 20,517.91 = 4,325.19 : x
  2. Step 2: Convert to fraction form
    13,678.61/20,517.91 = 4,325.19/x
  3. Step 3: Cross multiply
    13,678.61x = 20,517.91 × 4,325.19
  4. Step 4: Simplify right side
    13,678.61x = 88,743,859.15
  5. Step 5: Solve for x
    x = 88,743,859.15/13,678.61
  6. Step 6: Final answer
    x = 6,487.78

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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.