Home / 20,144.38-30,216.58-7,661.52

Finding the Fourth Proportional to 20,144.38, 30,216.58 and 7,661.52

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Solution

The fourth proportional to 20,144.38, 30,216.58 and 7,661.52 is: 11,492.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.38 : 30,216.58 = 7,661.52 : x
  2. Step 2: Convert to fraction form
    20,144.38/30,216.58 = 7,661.52/x
  3. Step 3: Cross multiply
    20,144.38x = 30,216.58 × 7,661.52
  4. Step 4: Simplify right side
    20,144.38x = 231,504,932.00
  5. Step 5: Solve for x
    x = 231,504,932.00/20,144.38
  6. Step 6: Final answer
    x = 11,492.28

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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.