Home / 20,284.45-27,991.14-11,209.42

Finding the Fourth Proportional to 20,284.45, 27,991.14 and 11,209.42

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Solution

The fourth proportional to 20,284.45, 27,991.14 and 11,209.42 is: 15,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.45 : 27,991.14 = 11,209.42 : x
  2. Step 2: Convert to fraction form
    20,284.45/27,991.14 = 11,209.42/x
  3. Step 3: Cross multiply
    20,284.45x = 27,991.14 × 11,209.42
  4. Step 4: Simplify right side
    20,284.45x = 313,764,444.54
  5. Step 5: Solve for x
    x = 313,764,444.54/20,284.45
  6. Step 6: Final answer
    x = 15,468.23

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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.