Home / 15,682.09-21,641.29-8,608.36

Finding the Fourth Proportional to 15,682.09, 21,641.29 and 8,608.36

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Solution

The fourth proportional to 15,682.09, 21,641.29 and 8,608.36 is: 11,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,682.09 : 21,641.29 = 8,608.36 : x
  2. Step 2: Convert to fraction form
    15,682.09/21,641.29 = 8,608.36/x
  3. Step 3: Cross multiply
    15,682.09x = 21,641.29 × 8,608.36
  4. Step 4: Simplify right side
    15,682.09x = 186,296,015.18
  5. Step 5: Solve for x
    x = 186,296,015.18/15,682.09
  6. Step 6: Final answer
    x = 11,879.54

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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.