Home / 20,556.41-28,367.83-11,603.99

Finding the Fourth Proportional to 20,556.41, 28,367.83 and 11,603.99

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Solution

The fourth proportional to 20,556.41, 28,367.83 and 11,603.99 is: 16,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.41 : 28,367.83 = 11,603.99 : x
  2. Step 2: Convert to fraction form
    20,556.41/28,367.83 = 11,603.99/x
  3. Step 3: Cross multiply
    20,556.41x = 28,367.83 × 11,603.99
  4. Step 4: Simplify right side
    20,556.41x = 329,179,844.79
  5. Step 5: Solve for x
    x = 329,179,844.79/20,556.41
  6. Step 6: Final answer
    x = 16,013.49

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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.