Home / 18,311.72-27,429.22-11,704.28

Finding the Fourth Proportional to 18,311.72, 27,429.22 and 11,704.28

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Solution

The fourth proportional to 18,311.72, 27,429.22 and 11,704.28 is: 17,531.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.72 : 27,429.22 = 11,704.28 : x
  2. Step 2: Convert to fraction form
    18,311.72/27,429.22 = 11,704.28/x
  3. Step 3: Cross multiply
    18,311.72x = 27,429.22 × 11,704.28
  4. Step 4: Simplify right side
    18,311.72x = 321,039,271.06
  5. Step 5: Solve for x
    x = 321,039,271.06/18,311.72
  6. Step 6: Final answer
    x = 17,531.90

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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.