Home / 20,933.91-31,388.58-8,454.33

Finding the Fourth Proportional to 20,933.91, 31,388.58 and 8,454.33

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Solution

The fourth proportional to 20,933.91, 31,388.58 and 8,454.33 is: 12,676.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.91 : 31,388.58 = 8,454.33 : x
  2. Step 2: Convert to fraction form
    20,933.91/31,388.58 = 8,454.33/x
  3. Step 3: Cross multiply
    20,933.91x = 31,388.58 × 8,454.33
  4. Step 4: Simplify right side
    20,933.91x = 265,369,413.55
  5. Step 5: Solve for x
    x = 265,369,413.55/20,933.91
  6. Step 6: Final answer
    x = 12,676.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.