Home / 19,147.88-28,716.24-7,458.32

Finding the Fourth Proportional to 19,147.88, 28,716.24 and 7,458.32

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Solution

The fourth proportional to 19,147.88, 28,716.24 and 7,458.32 is: 11,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.88 : 28,716.24 = 7,458.32 : x
  2. Step 2: Convert to fraction form
    19,147.88/28,716.24 = 7,458.32/x
  3. Step 3: Cross multiply
    19,147.88x = 28,716.24 × 7,458.32
  4. Step 4: Simplify right side
    19,147.88x = 214,174,907.12
  5. Step 5: Solve for x
    x = 214,174,907.12/19,147.88
  6. Step 6: Final answer
    x = 11,185.31

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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.