Home / 13,479.03-20,222.49-6,909.80

Finding the Fourth Proportional to 13,479.03, 20,222.49 and 6,909.80

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Solution

The fourth proportional to 13,479.03, 20,222.49 and 6,909.80 is: 10,366.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.03 : 20,222.49 = 6,909.80 : x
  2. Step 2: Convert to fraction form
    13,479.03/20,222.49 = 6,909.80/x
  3. Step 3: Cross multiply
    13,479.03x = 20,222.49 × 6,909.80
  4. Step 4: Simplify right side
    13,479.03x = 139,733,260.29
  5. Step 5: Solve for x
    x = 139,733,260.29/13,479.03
  6. Step 6: Final answer
    x = 10,366.71

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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.