Home / 31,629.81-43,647.85-18,201.54

Finding the Fourth Proportional to 31,629.81, 43,647.85 and 18,201.54

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Solution

The fourth proportional to 31,629.81, 43,647.85 and 18,201.54 is: 25,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.81 : 43,647.85 = 18,201.54 : x
  2. Step 2: Convert to fraction form
    31,629.81/43,647.85 = 18,201.54/x
  3. Step 3: Cross multiply
    31,629.81x = 43,647.85 × 18,201.54
  4. Step 4: Simplify right side
    31,629.81x = 794,458,171.74
  5. Step 5: Solve for x
    x = 794,458,171.74/31,629.81
  6. Step 6: Final answer
    x = 25,117.39

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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.