Home / 20,764.22-28,657.91-13,202.67

Finding the Fourth Proportional to 20,764.22, 28,657.91 and 13,202.67

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Solution

The fourth proportional to 20,764.22, 28,657.91 and 13,202.67 is: 18,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.22 : 28,657.91 = 13,202.67 : x
  2. Step 2: Convert to fraction form
    20,764.22/28,657.91 = 13,202.67/x
  3. Step 3: Cross multiply
    20,764.22x = 28,657.91 × 13,202.67
  4. Step 4: Simplify right side
    20,764.22x = 378,360,790.96
  5. Step 5: Solve for x
    x = 378,360,790.96/20,764.22
  6. Step 6: Final answer
    x = 18,221.77

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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.