Home / 14,778.88-20,392.83-8,491.26

Finding the Fourth Proportional to 14,778.88, 20,392.83 and 8,491.26

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Solution

The fourth proportional to 14,778.88, 20,392.83 and 8,491.26 is: 11,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.88 : 20,392.83 = 8,491.26 : x
  2. Step 2: Convert to fraction form
    14,778.88/20,392.83 = 8,491.26/x
  3. Step 3: Cross multiply
    14,778.88x = 20,392.83 × 8,491.26
  4. Step 4: Simplify right side
    14,778.88x = 173,160,821.67
  5. Step 5: Solve for x
    x = 173,160,821.67/14,778.88
  6. Step 6: Final answer
    x = 11,716.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.