Home / 31,195.52-43,078.56-20,036.96

Finding the Fourth Proportional to 31,195.52, 43,078.56 and 20,036.96

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Solution

The fourth proportional to 31,195.52, 43,078.56 and 20,036.96 is: 27,669.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,195.52 : 43,078.56 = 20,036.96 : x
  2. Step 2: Convert to fraction form
    31,195.52/43,078.56 = 20,036.96/x
  3. Step 3: Cross multiply
    31,195.52x = 43,078.56 × 20,036.96
  4. Step 4: Simplify right side
    31,195.52x = 863,163,383.58
  5. Step 5: Solve for x
    x = 863,163,383.58/31,195.52
  6. Step 6: Final answer
    x = 27,669.47

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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.