Home / 18,791.45-28,186.97-5,643.26

Finding the Fourth Proportional to 18,791.45, 28,186.97 and 5,643.26

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Solution

The fourth proportional to 18,791.45, 28,186.97 and 5,643.26 is: 8,464.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.45 : 28,186.97 = 5,643.26 : x
  2. Step 2: Convert to fraction form
    18,791.45/28,186.97 = 5,643.26/x
  3. Step 3: Cross multiply
    18,791.45x = 28,186.97 × 5,643.26
  4. Step 4: Simplify right side
    18,791.45x = 159,066,231.17
  5. Step 5: Solve for x
    x = 159,066,231.17/18,791.45
  6. Step 6: Final answer
    x = 8,464.82

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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.