Home / 20,848.99-28,769.45-11,894.77

Finding the Fourth Proportional to 20,848.99, 28,769.45 and 11,894.77

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Solution

The fourth proportional to 20,848.99, 28,769.45 and 11,894.77 is: 16,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.99 : 28,769.45 = 11,894.77 : x
  2. Step 2: Convert to fraction form
    20,848.99/28,769.45 = 11,894.77/x
  3. Step 3: Cross multiply
    20,848.99x = 28,769.45 × 11,894.77
  4. Step 4: Simplify right side
    20,848.99x = 342,205,905.80
  5. Step 5: Solve for x
    x = 342,205,905.80/20,848.99
  6. Step 6: Final answer
    x = 16,413.55

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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.