Home / 12,991.44-19,498.32-5,205.84

Finding the Fourth Proportional to 12,991.44, 19,498.32 and 5,205.84

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Solution

The fourth proportional to 12,991.44, 19,498.32 and 5,205.84 is: 7,813.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.44 : 19,498.32 = 5,205.84 : x
  2. Step 2: Convert to fraction form
    12,991.44/19,498.32 = 5,205.84/x
  3. Step 3: Cross multiply
    12,991.44x = 19,498.32 × 5,205.84
  4. Step 4: Simplify right side
    12,991.44x = 101,505,134.19
  5. Step 5: Solve for x
    x = 101,505,134.19/12,991.44
  6. Step 6: Final answer
    x = 7,813.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.