Home / 31,815.56-43,898.28-19,874.54

Finding the Fourth Proportional to 31,815.56, 43,898.28 and 19,874.54

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Solution

The fourth proportional to 31,815.56, 43,898.28 and 19,874.54 is: 27,422.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,815.56 : 43,898.28 = 19,874.54 : x
  2. Step 2: Convert to fraction form
    31,815.56/43,898.28 = 19,874.54/x
  3. Step 3: Cross multiply
    31,815.56x = 43,898.28 × 19,874.54
  4. Step 4: Simplify right side
    31,815.56x = 872,458,121.79
  5. Step 5: Solve for x
    x = 872,458,121.79/31,815.56
  6. Step 6: Final answer
    x = 27,422.37

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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.