Home / 13,479.75-20,231.82-6,910.47

Finding the Fourth Proportional to 13,479.75, 20,231.82 and 6,910.47

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Solution

The fourth proportional to 13,479.75, 20,231.82 and 6,910.47 is: 10,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.75 : 20,231.82 = 6,910.47 : x
  2. Step 2: Convert to fraction form
    13,479.75/20,231.82 = 6,910.47/x
  3. Step 3: Cross multiply
    13,479.75x = 20,231.82 × 6,910.47
  4. Step 4: Simplify right side
    13,479.75x = 139,811,385.16
  5. Step 5: Solve for x
    x = 139,811,385.16/13,479.75
  6. Step 6: Final answer
    x = 10,371.96

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1.5x scale

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.