Home / 15,293.85-21,104.26-8,578.54

Finding the Fourth Proportional to 15,293.85, 21,104.26 and 8,578.54

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Solution

The fourth proportional to 15,293.85, 21,104.26 and 8,578.54 is: 11,837.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,293.85 : 21,104.26 = 8,578.54 : x
  2. Step 2: Convert to fraction form
    15,293.85/21,104.26 = 8,578.54/x
  3. Step 3: Cross multiply
    15,293.85x = 21,104.26 × 8,578.54
  4. Step 4: Simplify right side
    15,293.85x = 181,043,738.58
  5. Step 5: Solve for x
    x = 181,043,738.58/15,293.85
  6. Step 6: Final answer
    x = 11,837.68

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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.