Home / 20,819.95-28,732.27-11,866.01

Finding the Fourth Proportional to 20,819.95, 28,732.27 and 11,866.01

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Solution

The fourth proportional to 20,819.95, 28,732.27 and 11,866.01 is: 16,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.95 : 28,732.27 = 11,866.01 : x
  2. Step 2: Convert to fraction form
    20,819.95/28,732.27 = 11,866.01/x
  3. Step 3: Cross multiply
    20,819.95x = 28,732.27 × 11,866.01
  4. Step 4: Simplify right side
    20,819.95x = 340,937,413.68
  5. Step 5: Solve for x
    x = 340,937,413.68/20,819.95
  6. Step 6: Final answer
    x = 16,375.51

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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.