Home / 18,009.40-27,010.68-7,628.44

Finding the Fourth Proportional to 18,009.40, 27,010.68 and 7,628.44

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Solution

The fourth proportional to 18,009.40, 27,010.68 and 7,628.44 is: 11,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.40 : 27,010.68 = 7,628.44 : x
  2. Step 2: Convert to fraction form
    18,009.40/27,010.68 = 7,628.44/x
  3. Step 3: Cross multiply
    18,009.40x = 27,010.68 × 7,628.44
  4. Step 4: Simplify right side
    18,009.40x = 206,049,351.74
  5. Step 5: Solve for x
    x = 206,049,351.74/18,009.40
  6. Step 6: Final answer
    x = 11,441.21

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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.