Home / 31,626.54-43,653.69-20,879.19

Finding the Fourth Proportional to 31,626.54, 43,653.69 and 20,879.19

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Solution

The fourth proportional to 31,626.54, 43,653.69 and 20,879.19 is: 28,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,626.54 : 43,653.69 = 20,879.19 : x
  2. Step 2: Convert to fraction form
    31,626.54/43,653.69 = 20,879.19/x
  3. Step 3: Cross multiply
    31,626.54x = 43,653.69 × 20,879.19
  4. Step 4: Simplify right side
    31,626.54x = 911,453,687.71
  5. Step 5: Solve for x
    x = 911,453,687.71/31,626.54
  6. Step 6: Final answer
    x = 28,819.27

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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.