Home / 20,556.10-28,367.39-11,124.64

Finding the Fourth Proportional to 20,556.10, 28,367.39 and 11,124.64

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Solution

The fourth proportional to 20,556.10, 28,367.39 and 11,124.64 is: 15,351.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.10 : 28,367.39 = 11,124.64 : x
  2. Step 2: Convert to fraction form
    20,556.10/28,367.39 = 11,124.64/x
  3. Step 3: Cross multiply
    20,556.10x = 28,367.39 × 11,124.64
  4. Step 4: Simplify right side
    20,556.10x = 315,576,804.03
  5. Step 5: Solve for x
    x = 315,576,804.03/20,556.10
  6. Step 6: Final answer
    x = 15,351.98

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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.