Home / 13,620.96-20,418.54-6,221.04

Finding the Fourth Proportional to 13,620.96, 20,418.54 and 6,221.04

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Solution

The fourth proportional to 13,620.96, 20,418.54 and 6,221.04 is: 9,325.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.96 : 20,418.54 = 6,221.04 : x
  2. Step 2: Convert to fraction form
    13,620.96/20,418.54 = 6,221.04/x
  3. Step 3: Cross multiply
    13,620.96x = 20,418.54 × 6,221.04
  4. Step 4: Simplify right side
    13,620.96x = 127,024,554.08
  5. Step 5: Solve for x
    x = 127,024,554.08/13,620.96
  6. Step 6: Final answer
    x = 9,325.67

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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.