Home / 30,231.57-45,370.97-20,936.73

Finding the Fourth Proportional to 30,231.57, 45,370.97 and 20,936.73

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Solution

The fourth proportional to 30,231.57, 45,370.97 and 20,936.73 is: 31,421.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.57 : 45,370.97 = 20,936.73 : x
  2. Step 2: Convert to fraction form
    30,231.57/45,370.97 = 20,936.73/x
  3. Step 3: Cross multiply
    30,231.57x = 45,370.97 × 20,936.73
  4. Step 4: Simplify right side
    30,231.57x = 949,919,644.04
  5. Step 5: Solve for x
    x = 949,919,644.04/30,231.57
  6. Step 6: Final answer
    x = 31,421.45

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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.