Home / 15,768.09-21,759.93-8,694.54

Finding the Fourth Proportional to 15,768.09, 21,759.93 and 8,694.54

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Solution

The fourth proportional to 15,768.09, 21,759.93 and 8,694.54 is: 11,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.09 : 21,759.93 = 8,694.54 : x
  2. Step 2: Convert to fraction form
    15,768.09/21,759.93 = 8,694.54/x
  3. Step 3: Cross multiply
    15,768.09x = 21,759.93 × 8,694.54
  4. Step 4: Simplify right side
    15,768.09x = 189,192,581.78
  5. Step 5: Solve for x
    x = 189,192,581.78/15,768.09
  6. Step 6: Final answer
    x = 11,998.45

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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.