Home / 31,278.74-43,183.41-19,358.06

Finding the Fourth Proportional to 31,278.74, 43,183.41 and 19,358.06

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Solution

The fourth proportional to 31,278.74, 43,183.41 and 19,358.06 is: 26,725.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.74 : 43,183.41 = 19,358.06 : x
  2. Step 2: Convert to fraction form
    31,278.74/43,183.41 = 19,358.06/x
  3. Step 3: Cross multiply
    31,278.74x = 43,183.41 × 19,358.06
  4. Step 4: Simplify right side
    31,278.74x = 835,947,041.78
  5. Step 5: Solve for x
    x = 835,947,041.78/31,278.74
  6. Step 6: Final answer
    x = 26,725.73

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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.