Home / 15,682.05-21,640.79-8,608.47

Finding the Fourth Proportional to 15,682.05, 21,640.79 and 8,608.47

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Solution

The fourth proportional to 15,682.05, 21,640.79 and 8,608.47 is: 11,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,682.05 : 21,640.79 = 8,608.47 : x
  2. Step 2: Convert to fraction form
    15,682.05/21,640.79 = 8,608.47/x
  3. Step 3: Cross multiply
    15,682.05x = 21,640.79 × 8,608.47
  4. Step 4: Simplify right side
    15,682.05x = 186,294,048.45
  5. Step 5: Solve for x
    x = 186,294,048.45/15,682.05
  6. Step 6: Final answer
    x = 11,879.44

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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.