Home / 18,485.91-27,716.18-6,639.44

Finding the Fourth Proportional to 18,485.91, 27,716.18 and 6,639.44

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Solution

The fourth proportional to 18,485.91, 27,716.18 and 6,639.44 is: 9,954.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.91 : 27,716.18 = 6,639.44 : x
  2. Step 2: Convert to fraction form
    18,485.91/27,716.18 = 6,639.44/x
  3. Step 3: Cross multiply
    18,485.91x = 27,716.18 × 6,639.44
  4. Step 4: Simplify right side
    18,485.91x = 184,019,742.36
  5. Step 5: Solve for x
    x = 184,019,742.36/18,485.91
  6. Step 6: Final answer
    x = 9,954.59

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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.