Home / 31,851.52-43,935.60-20,536

Finding the Fourth Proportional to 31,851.52, 43,935.60 and 20,536

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Solution

The fourth proportional to 31,851.52, 43,935.60 and 20,536 is: 28,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,851.52 : 43,935.60 = 20,536 : x
  2. Step 2: Convert to fraction form
    31,851.52/43,935.60 = 20,536/x
  3. Step 3: Cross multiply
    31,851.52x = 43,935.60 × 20,536
  4. Step 4: Simplify right side
    31,851.52x = 902,261,481.60
  5. Step 5: Solve for x
    x = 902,261,481.60/31,851.52
  6. Step 6: Final answer
    x = 28,327.11

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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.