Home / 13,628.96-20,443.89-3,768.32

Finding the Fourth Proportional to 13,628.96, 20,443.89 and 3,768.32

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Solution

The fourth proportional to 13,628.96, 20,443.89 and 3,768.32 is: 5,652.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.96 : 20,443.89 = 3,768.32 : x
  2. Step 2: Convert to fraction form
    13,628.96/20,443.89 = 3,768.32/x
  3. Step 3: Cross multiply
    13,628.96x = 20,443.89 × 3,768.32
  4. Step 4: Simplify right side
    13,628.96x = 77,039,184.81
  5. Step 5: Solve for x
    x = 77,039,184.81/13,628.96
  6. Step 6: Final answer
    x = 5,652.61

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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.