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Finding the Fourth Proportional to 13,483.56, 20,230.20 and 6,912.84

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Solution

The fourth proportional to 13,483.56, 20,230.20 and 6,912.84 is: 10,371.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.56 : 20,230.20 = 6,912.84 : x
  2. Step 2: Convert to fraction form
    13,483.56/20,230.20 = 6,912.84/x
  3. Step 3: Cross multiply
    13,483.56x = 20,230.20 × 6,912.84
  4. Step 4: Simplify right side
    13,483.56x = 139,848,135.77
  5. Step 5: Solve for x
    x = 139,848,135.77/13,483.56
  6. Step 6: Final answer
    x = 10,371.75

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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.