Home / 13,161.86-18,163.60-7,193.78

Finding the Fourth Proportional to 13,161.86, 18,163.60 and 7,193.78

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Solution

The fourth proportional to 13,161.86, 18,163.60 and 7,193.78 is: 9,927.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.86 : 18,163.60 = 7,193.78 : x
  2. Step 2: Convert to fraction form
    13,161.86/18,163.60 = 7,193.78/x
  3. Step 3: Cross multiply
    13,161.86x = 18,163.60 × 7,193.78
  4. Step 4: Simplify right side
    13,161.86x = 130,664,942.41
  5. Step 5: Solve for x
    x = 130,664,942.41/13,161.86
  6. Step 6: Final answer
    x = 9,927.54

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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.