Home / 15,768.07-21,760.10-8,694.75

Finding the Fourth Proportional to 15,768.07, 21,760.10 and 8,694.75

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Solution

The fourth proportional to 15,768.07, 21,760.10 and 8,694.75 is: 11,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.07 : 21,760.10 = 8,694.75 : x
  2. Step 2: Convert to fraction form
    15,768.07/21,760.10 = 8,694.75/x
  3. Step 3: Cross multiply
    15,768.07x = 21,760.10 × 8,694.75
  4. Step 4: Simplify right side
    15,768.07x = 189,198,629.48
  5. Step 5: Solve for x
    x = 189,198,629.48/15,768.07
  6. Step 6: Final answer
    x = 11,998.85

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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.