Home / 13,768.28-20,652.40-3,907.64

Finding the Fourth Proportional to 13,768.28, 20,652.40 and 3,907.64

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Solution

The fourth proportional to 13,768.28, 20,652.40 and 3,907.64 is: 5,861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.28 : 20,652.40 = 3,907.64 : x
  2. Step 2: Convert to fraction form
    13,768.28/20,652.40 = 3,907.64/x
  3. Step 3: Cross multiply
    13,768.28x = 20,652.40 × 3,907.64
  4. Step 4: Simplify right side
    13,768.28x = 80,702,144.34
  5. Step 5: Solve for x
    x = 80,702,144.34/13,768.28
  6. Step 6: Final answer
    x = 5,861.45

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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.