Home / 26,858.15-40,288.05-12,819.67

Finding the Fourth Proportional to 26,858.15, 40,288.05 and 12,819.67

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Solution

The fourth proportional to 26,858.15, 40,288.05 and 12,819.67 is: 19,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,858.15 : 40,288.05 = 12,819.67 : x
  2. Step 2: Convert to fraction form
    26,858.15/40,288.05 = 12,819.67/x
  3. Step 3: Cross multiply
    26,858.15x = 40,288.05 × 12,819.67
  4. Step 4: Simplify right side
    26,858.15x = 516,479,405.22
  5. Step 5: Solve for x
    x = 516,479,405.22/26,858.15
  6. Step 6: Final answer
    x = 19,229.90

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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.