Home / 20,806.06-28,709.50-11,851.83

Finding the Fourth Proportional to 20,806.06, 28,709.50 and 11,851.83

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Solution

The fourth proportional to 20,806.06, 28,709.50 and 11,851.83 is: 16,353.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.06 : 28,709.50 = 11,851.83 : x
  2. Step 2: Convert to fraction form
    20,806.06/28,709.50 = 11,851.83/x
  3. Step 3: Cross multiply
    20,806.06x = 28,709.50 × 11,851.83
  4. Step 4: Simplify right side
    20,806.06x = 340,260,163.02
  5. Step 5: Solve for x
    x = 340,260,163.02/20,806.06
  6. Step 6: Final answer
    x = 16,353.90

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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.