Home / 20,894.05-31,340.74-8,413.77

Finding the Fourth Proportional to 20,894.05, 31,340.74 and 8,413.77

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Solution

The fourth proportional to 20,894.05, 31,340.74 and 8,413.77 is: 12,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.05 : 31,340.74 = 8,413.77 : x
  2. Step 2: Convert to fraction form
    20,894.05/31,340.74 = 8,413.77/x
  3. Step 3: Cross multiply
    20,894.05x = 31,340.74 × 8,413.77
  4. Step 4: Simplify right side
    20,894.05x = 263,693,777.99
  5. Step 5: Solve for x
    x = 263,693,777.99/20,894.05
  6. Step 6: Final answer
    x = 12,620.52

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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.