Home / 13,909.54-20,864.30-3,379.49

Finding the Fourth Proportional to 13,909.54, 20,864.30 and 3,379.49

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Solution

The fourth proportional to 13,909.54, 20,864.30 and 3,379.49 is: 5,069.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.54 : 20,864.30 = 3,379.49 : x
  2. Step 2: Convert to fraction form
    13,909.54/20,864.30 = 3,379.49/x
  3. Step 3: Cross multiply
    13,909.54x = 20,864.30 × 3,379.49
  4. Step 4: Simplify right side
    13,909.54x = 70,510,693.21
  5. Step 5: Solve for x
    x = 70,510,693.21/13,909.54
  6. Step 6: Final answer
    x = 5,069.23

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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.