Home / 20,556.09-30,804.62-11,678.49

Finding the Fourth Proportional to 20,556.09, 30,804.62 and 11,678.49

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Solution

The fourth proportional to 20,556.09, 30,804.62 and 11,678.49 is: 17,500.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.09 : 30,804.62 = 11,678.49 : x
  2. Step 2: Convert to fraction form
    20,556.09/30,804.62 = 11,678.49/x
  3. Step 3: Cross multiply
    20,556.09x = 30,804.62 × 11,678.49
  4. Step 4: Simplify right side
    20,556.09x = 359,751,388.23
  5. Step 5: Solve for x
    x = 359,751,388.23/20,556.09
  6. Step 6: Final answer
    x = 17,500.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.