Home / 31,859.78-43,954.22-20,528.37

Finding the Fourth Proportional to 31,859.78, 43,954.22 and 20,528.37

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Solution

The fourth proportional to 31,859.78, 43,954.22 and 20,528.37 is: 28,321.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,859.78 : 43,954.22 = 20,528.37 : x
  2. Step 2: Convert to fraction form
    31,859.78/43,954.22 = 20,528.37/x
  3. Step 3: Cross multiply
    31,859.78x = 43,954.22 × 20,528.37
  4. Step 4: Simplify right side
    31,859.78x = 902,308,542.54
  5. Step 5: Solve for x
    x = 902,308,542.54/31,859.78
  6. Step 6: Final answer
    x = 28,321.25

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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.