Home / 20,556.39-28,367.87-11,124.98

Finding the Fourth Proportional to 20,556.39, 28,367.87 and 11,124.98

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Solution

The fourth proportional to 20,556.39, 28,367.87 and 11,124.98 is: 15,352.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.39 : 28,367.87 = 11,124.98 : x
  2. Step 2: Convert to fraction form
    20,556.39/28,367.87 = 11,124.98/x
  3. Step 3: Cross multiply
    20,556.39x = 28,367.87 × 11,124.98
  4. Step 4: Simplify right side
    20,556.39x = 315,591,788.93
  5. Step 5: Solve for x
    x = 315,591,788.93/20,556.39
  6. Step 6: Final answer
    x = 15,352.49

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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.