Home / 15,928.94-21,982.19-8,759.16

Finding the Fourth Proportional to 15,928.94, 21,982.19 and 8,759.16

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Solution

The fourth proportional to 15,928.94, 21,982.19 and 8,759.16 is: 12,087.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.94 : 21,982.19 = 8,759.16 : x
  2. Step 2: Convert to fraction form
    15,928.94/21,982.19 = 8,759.16/x
  3. Step 3: Cross multiply
    15,928.94x = 21,982.19 × 8,759.16
  4. Step 4: Simplify right side
    15,928.94x = 192,545,519.36
  5. Step 5: Solve for x
    x = 192,545,519.36/15,928.94
  6. Step 6: Final answer
    x = 12,087.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.