Home / 20,556.38-28,367.81-11,124.95

Finding the Fourth Proportional to 20,556.38, 28,367.81 and 11,124.95

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Solution

The fourth proportional to 20,556.38, 28,367.81 and 11,124.95 is: 15,352.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.38 : 28,367.81 = 11,124.95 : x
  2. Step 2: Convert to fraction form
    20,556.38/28,367.81 = 11,124.95/x
  3. Step 3: Cross multiply
    20,556.38x = 28,367.81 × 11,124.95
  4. Step 4: Simplify right side
    20,556.38x = 315,590,467.86
  5. Step 5: Solve for x
    x = 315,590,467.86/20,556.38
  6. Step 6: Final answer
    x = 15,352.43

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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.