Home / 15,418.38-21,277.44-8,344.79

Finding the Fourth Proportional to 15,418.38, 21,277.44 and 8,344.79

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Solution

The fourth proportional to 15,418.38, 21,277.44 and 8,344.79 is: 11,515.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.38 : 21,277.44 = 8,344.79 : x
  2. Step 2: Convert to fraction form
    15,418.38/21,277.44 = 8,344.79/x
  3. Step 3: Cross multiply
    15,418.38x = 21,277.44 × 8,344.79
  4. Step 4: Simplify right side
    15,418.38x = 177,555,662.15
  5. Step 5: Solve for x
    x = 177,555,662.15/15,418.38
  6. Step 6: Final answer
    x = 11,515.84

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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.