Home / 18,390.79-27,571.56-7,995.25

Finding the Fourth Proportional to 18,390.79, 27,571.56 and 7,995.25

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Solution

The fourth proportional to 18,390.79, 27,571.56 and 7,995.25 is: 11,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.79 : 27,571.56 = 7,995.25 : x
  2. Step 2: Convert to fraction form
    18,390.79/27,571.56 = 7,995.25/x
  3. Step 3: Cross multiply
    18,390.79x = 27,571.56 × 7,995.25
  4. Step 4: Simplify right side
    18,390.79x = 220,441,515.09
  5. Step 5: Solve for x
    x = 220,441,515.09/18,390.79
  6. Step 6: Final answer
    x = 11,986.52

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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.