Home / 13,891.44-19,169.64-8,515.92

Finding the Fourth Proportional to 13,891.44, 19,169.64 and 8,515.92

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Solution

The fourth proportional to 13,891.44, 19,169.64 and 8,515.92 is: 11,751.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.44 : 19,169.64 = 8,515.92 : x
  2. Step 2: Convert to fraction form
    13,891.44/19,169.64 = 8,515.92/x
  3. Step 3: Cross multiply
    13,891.44x = 19,169.64 × 8,515.92
  4. Step 4: Simplify right side
    13,891.44x = 163,247,120.67
  5. Step 5: Solve for x
    x = 163,247,120.67/13,891.44
  6. Step 6: Final answer
    x = 11,751.63

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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.