Home / 20,289.14-30,391.79-11,943.44

Finding the Fourth Proportional to 20,289.14, 30,391.79 and 11,943.44

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Solution

The fourth proportional to 20,289.14, 30,391.79 and 11,943.44 is: 17,890.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.14 : 30,391.79 = 11,943.44 : x
  2. Step 2: Convert to fraction form
    20,289.14/30,391.79 = 11,943.44/x
  3. Step 3: Cross multiply
    20,289.14x = 30,391.79 × 11,943.44
  4. Step 4: Simplify right side
    20,289.14x = 362,982,308.68
  5. Step 5: Solve for x
    x = 362,982,308.68/20,289.14
  6. Step 6: Final answer
    x = 17,890.48

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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.