Home / 13,784.45-20,664.38-6,378.73

Finding the Fourth Proportional to 13,784.45, 20,664.38 and 6,378.73

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Solution

The fourth proportional to 13,784.45, 20,664.38 and 6,378.73 is: 9,562.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.45 : 20,664.38 = 6,378.73 : x
  2. Step 2: Convert to fraction form
    13,784.45/20,664.38 = 6,378.73/x
  3. Step 3: Cross multiply
    13,784.45x = 20,664.38 × 6,378.73
  4. Step 4: Simplify right side
    13,784.45x = 131,812,464.92
  5. Step 5: Solve for x
    x = 131,812,464.92/13,784.45
  6. Step 6: Final answer
    x = 9,562.41

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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.