Home / 29,821.92-41,143.68-20,879.52

Finding the Fourth Proportional to 29,821.92, 41,143.68 and 20,879.52

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Solution

The fourth proportional to 29,821.92, 41,143.68 and 20,879.52 is: 28,806.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,821.92 : 41,143.68 = 20,879.52 : x
  2. Step 2: Convert to fraction form
    29,821.92/41,143.68 = 20,879.52/x
  3. Step 3: Cross multiply
    29,821.92x = 41,143.68 × 20,879.52
  4. Step 4: Simplify right side
    29,821.92x = 859,060,289.43
  5. Step 5: Solve for x
    x = 859,060,289.43/29,821.92
  6. Step 6: Final answer
    x = 28,806.34

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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.