Home / 15,336.44-21,161.46-8,621.18

Finding the Fourth Proportional to 15,336.44, 21,161.46 and 8,621.18

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Solution

The fourth proportional to 15,336.44, 21,161.46 and 8,621.18 is: 11,895.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,336.44 : 21,161.46 = 8,621.18 : x
  2. Step 2: Convert to fraction form
    15,336.44/21,161.46 = 8,621.18/x
  3. Step 3: Cross multiply
    15,336.44x = 21,161.46 × 8,621.18
  4. Step 4: Simplify right side
    15,336.44x = 182,436,755.72
  5. Step 5: Solve for x
    x = 182,436,755.72/15,336.44
  6. Step 6: Final answer
    x = 11,895.64

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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.