Home / 22,749.78-31,391.01-13,187.80

Finding the Fourth Proportional to 22,749.78, 31,391.01 and 13,187.80

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Solution

The fourth proportional to 22,749.78, 31,391.01 and 13,187.80 is: 18,197.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,749.78 : 31,391.01 = 13,187.80 : x
  2. Step 2: Convert to fraction form
    22,749.78/31,391.01 = 13,187.80/x
  3. Step 3: Cross multiply
    22,749.78x = 31,391.01 × 13,187.80
  4. Step 4: Simplify right side
    22,749.78x = 413,978,361.68
  5. Step 5: Solve for x
    x = 413,978,361.68/22,749.78
  6. Step 6: Final answer
    x = 18,197.03

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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.