Home / 31,341.36-43,258.56-21,286.56

Finding the Fourth Proportional to 31,341.36, 43,258.56 and 21,286.56

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Solution

The fourth proportional to 31,341.36, 43,258.56 and 21,286.56 is: 29,380.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,341.36 : 43,258.56 = 21,286.56 : x
  2. Step 2: Convert to fraction form
    31,341.36/43,258.56 = 21,286.56/x
  3. Step 3: Cross multiply
    31,341.36x = 43,258.56 × 21,286.56
  4. Step 4: Simplify right side
    31,341.36x = 920,825,932.95
  5. Step 5: Solve for x
    x = 920,825,932.95/31,341.36
  6. Step 6: Final answer
    x = 29,380.54

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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.