Home / 20,395.26-28,145.61-11,442.87

Finding the Fourth Proportional to 20,395.26, 28,145.61 and 11,442.87

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Solution

The fourth proportional to 20,395.26, 28,145.61 and 11,442.87 is: 15,791.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.26 : 28,145.61 = 11,442.87 : x
  2. Step 2: Convert to fraction form
    20,395.26/28,145.61 = 11,442.87/x
  3. Step 3: Cross multiply
    20,395.26x = 28,145.61 × 11,442.87
  4. Step 4: Simplify right side
    20,395.26x = 322,066,556.30
  5. Step 5: Solve for x
    x = 322,066,556.30/20,395.26
  6. Step 6: Final answer
    x = 15,791.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.