Home / 12,212.75-18,321.80-5,192.96

Finding the Fourth Proportional to 12,212.75, 18,321.80 and 5,192.96

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Solution

The fourth proportional to 12,212.75, 18,321.80 and 5,192.96 is: 7,790.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.75 : 18,321.80 = 5,192.96 : x
  2. Step 2: Convert to fraction form
    12,212.75/18,321.80 = 5,192.96/x
  3. Step 3: Cross multiply
    12,212.75x = 18,321.80 × 5,192.96
  4. Step 4: Simplify right side
    12,212.75x = 95,144,256.95
  5. Step 5: Solve for x
    x = 95,144,256.95/12,212.75
  6. Step 6: Final answer
    x = 7,790.57

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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.