Home / 18,486.07-27,728.70-7,963.09

Finding the Fourth Proportional to 18,486.07, 27,728.70 and 7,963.09

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Solution

The fourth proportional to 18,486.07, 27,728.70 and 7,963.09 is: 11,944.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.07 : 27,728.70 = 7,963.09 : x
  2. Step 2: Convert to fraction form
    18,486.07/27,728.70 = 7,963.09/x
  3. Step 3: Cross multiply
    18,486.07x = 27,728.70 × 7,963.09
  4. Step 4: Simplify right side
    18,486.07x = 220,806,133.68
  5. Step 5: Solve for x
    x = 220,806,133.68/18,486.07
  6. Step 6: Final answer
    x = 11,944.46

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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.