Home / 13,791.49-20,700.20-7,222.39

Finding the Fourth Proportional to 13,791.49, 20,700.20 and 7,222.39

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Solution

The fourth proportional to 13,791.49, 20,700.20 and 7,222.39 is: 10,840.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.49 : 20,700.20 = 7,222.39 : x
  2. Step 2: Convert to fraction form
    13,791.49/20,700.20 = 7,222.39/x
  3. Step 3: Cross multiply
    13,791.49x = 20,700.20 × 7,222.39
  4. Step 4: Simplify right side
    13,791.49x = 149,504,917.48
  5. Step 5: Solve for x
    x = 149,504,917.48/13,791.49
  6. Step 6: Final answer
    x = 10,840.37

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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.