Home / 20,662.27-30,992.36-11,320.54

Finding the Fourth Proportional to 20,662.27, 30,992.36 and 11,320.54

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Solution

The fourth proportional to 20,662.27, 30,992.36 and 11,320.54 is: 16,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.27 : 30,992.36 = 11,320.54 : x
  2. Step 2: Convert to fraction form
    20,662.27/30,992.36 = 11,320.54/x
  3. Step 3: Cross multiply
    20,662.27x = 30,992.36 × 11,320.54
  4. Step 4: Simplify right side
    20,662.27x = 350,850,201.89
  5. Step 5: Solve for x
    x = 350,850,201.89/20,662.27
  6. Step 6: Final answer
    x = 16,980.24

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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.