Home / 20,992.68-31,497.39-20,660.94

Finding the Fourth Proportional to 20,992.68, 31,497.39 and 20,660.94

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Solution

The fourth proportional to 20,992.68, 31,497.39 and 20,660.94 is: 30,999.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.68 : 31,497.39 = 20,660.94 : x
  2. Step 2: Convert to fraction form
    20,992.68/31,497.39 = 20,660.94/x
  3. Step 3: Cross multiply
    20,992.68x = 31,497.39 × 20,660.94
  4. Step 4: Simplify right side
    20,992.68x = 650,765,684.95
  5. Step 5: Solve for x
    x = 650,765,684.95/20,992.68
  6. Step 6: Final answer
    x = 30,999.65

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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.