Home / 18,782.44-28,175.82-10,991.32

Finding the Fourth Proportional to 18,782.44, 28,175.82 and 10,991.32

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Solution

The fourth proportional to 18,782.44, 28,175.82 and 10,991.32 is: 16,488.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.44 : 28,175.82 = 10,991.32 : x
  2. Step 2: Convert to fraction form
    18,782.44/28,175.82 = 10,991.32/x
  3. Step 3: Cross multiply
    18,782.44x = 28,175.82 × 10,991.32
  4. Step 4: Simplify right side
    18,782.44x = 309,689,453.88
  5. Step 5: Solve for x
    x = 309,689,453.88/18,782.44
  6. Step 6: Final answer
    x = 16,488.24

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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.