Home / 18,485.21-27,727.39-5,157.86

Finding the Fourth Proportional to 18,485.21, 27,727.39 and 5,157.86

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Solution

The fourth proportional to 18,485.21, 27,727.39 and 5,157.86 is: 7,736.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.21 : 27,727.39 = 5,157.86 : x
  2. Step 2: Convert to fraction form
    18,485.21/27,727.39 = 5,157.86/x
  3. Step 3: Cross multiply
    18,485.21x = 27,727.39 × 5,157.86
  4. Step 4: Simplify right side
    18,485.21x = 143,013,844.25
  5. Step 5: Solve for x
    x = 143,013,844.25/18,485.21
  6. Step 6: Final answer
    x = 7,736.66

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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.