Home / 15,760.92-21,751.05-8,687.33

Finding the Fourth Proportional to 15,760.92, 21,751.05 and 8,687.33

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Solution

The fourth proportional to 15,760.92, 21,751.05 and 8,687.33 is: 11,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,760.92 : 21,751.05 = 8,687.33 : x
  2. Step 2: Convert to fraction form
    15,760.92/21,751.05 = 8,687.33/x
  3. Step 3: Cross multiply
    15,760.92x = 21,751.05 × 8,687.33
  4. Step 4: Simplify right side
    15,760.92x = 188,958,440.44
  5. Step 5: Solve for x
    x = 188,958,440.44/15,760.92
  6. Step 6: Final answer
    x = 11,989.05

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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.