Home / 20,556.33-28,367.74-11,124.90

Finding the Fourth Proportional to 20,556.33, 28,367.74 and 11,124.90

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Solution

The fourth proportional to 20,556.33, 28,367.74 and 11,124.90 is: 15,352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.33 : 28,367.74 = 11,124.90 : x
  2. Step 2: Convert to fraction form
    20,556.33/28,367.74 = 11,124.90/x
  3. Step 3: Cross multiply
    20,556.33x = 28,367.74 × 11,124.90
  4. Step 4: Simplify right side
    20,556.33x = 315,588,128.89
  5. Step 5: Solve for x
    x = 315,588,128.89/20,556.33
  6. Step 6: Final answer
    x = 15,352.36

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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.