Home / 11,764.60-16,236-7,778.80

Finding the Fourth Proportional to 11,764.60, 16,236 and 7,778.80

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Solution

The fourth proportional to 11,764.60, 16,236 and 7,778.80 is: 10,735.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,764.60 : 16,236 = 7,778.80 : x
  2. Step 2: Convert to fraction form
    11,764.60/16,236 = 7,778.80/x
  3. Step 3: Cross multiply
    11,764.60x = 16,236 × 7,778.80
  4. Step 4: Simplify right side
    11,764.60x = 126,296,596.80
  5. Step 5: Solve for x
    x = 126,296,596.80/11,764.60
  6. Step 6: Final answer
    x = 10,735.31

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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.