Home / 31,626.52-43,653.67-20,879.24

Finding the Fourth Proportional to 31,626.52, 43,653.67 and 20,879.24

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Solution

The fourth proportional to 31,626.52, 43,653.67 and 20,879.24 is: 28,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,626.52 : 43,653.67 = 20,879.24 : x
  2. Step 2: Convert to fraction form
    31,626.52/43,653.67 = 20,879.24/x
  3. Step 3: Cross multiply
    31,626.52x = 43,653.67 × 20,879.24
  4. Step 4: Simplify right side
    31,626.52x = 911,455,182.34
  5. Step 5: Solve for x
    x = 911,455,182.34/31,626.52
  6. Step 6: Final answer
    x = 28,819.33

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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.