Home / 20,107.38-30,156.48-7,628.79

Finding the Fourth Proportional to 20,107.38, 30,156.48 and 7,628.79

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Solution

The fourth proportional to 20,107.38, 30,156.48 and 7,628.79 is: 11,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.38 : 30,156.48 = 7,628.79 : x
  2. Step 2: Convert to fraction form
    20,107.38/30,156.48 = 7,628.79/x
  3. Step 3: Cross multiply
    20,107.38x = 30,156.48 × 7,628.79
  4. Step 4: Simplify right side
    20,107.38x = 230,057,453.06
  5. Step 5: Solve for x
    x = 230,057,453.06/20,107.38
  6. Step 6: Final answer
    x = 11,441.44

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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.