Home / 20,481.99-28,265.67-11,529.81

Finding the Fourth Proportional to 20,481.99, 28,265.67 and 11,529.81

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Solution

The fourth proportional to 20,481.99, 28,265.67 and 11,529.81 is: 15,911.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.99 : 28,265.67 = 11,529.81 : x
  2. Step 2: Convert to fraction form
    20,481.99/28,265.67 = 11,529.81/x
  3. Step 3: Cross multiply
    20,481.99x = 28,265.67 × 11,529.81
  4. Step 4: Simplify right side
    20,481.99x = 325,897,804.62
  5. Step 5: Solve for x
    x = 325,897,804.62/20,481.99
  6. Step 6: Final answer
    x = 15,911.44

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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.