Home / 20,556.03-28,367.13-11,124.60

Finding the Fourth Proportional to 20,556.03, 28,367.13 and 11,124.60

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Solution

The fourth proportional to 20,556.03, 28,367.13 and 11,124.60 is: 15,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.03 : 28,367.13 = 11,124.60 : x
  2. Step 2: Convert to fraction form
    20,556.03/28,367.13 = 11,124.60/x
  3. Step 3: Cross multiply
    20,556.03x = 28,367.13 × 11,124.60
  4. Step 4: Simplify right side
    20,556.03x = 315,572,974.40
  5. Step 5: Solve for x
    x = 315,572,974.40/20,556.03
  6. Step 6: Final answer
    x = 15,351.84

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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.