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Finding the Fourth Proportional to 13,662.87, 20,494.91 and 6,648.67

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Solution

The fourth proportional to 13,662.87, 20,494.91 and 6,648.67 is: 9,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.87 : 20,494.91 = 6,648.67 : x
  2. Step 2: Convert to fraction form
    13,662.87/20,494.91 = 6,648.67/x
  3. Step 3: Cross multiply
    13,662.87x = 20,494.91 × 6,648.67
  4. Step 4: Simplify right side
    13,662.87x = 136,263,893.27
  5. Step 5: Solve for x
    x = 136,263,893.27/13,662.87
  6. Step 6: Final answer
    x = 9,973.30

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1.5x scale

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.