Home / 12,928.60-19,393.44-7,723

Finding the Fourth Proportional to 12,928.60, 19,393.44 and 7,723

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Solution

The fourth proportional to 12,928.60, 19,393.44 and 7,723 is: 11,584.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.60 : 19,393.44 = 7,723 : x
  2. Step 2: Convert to fraction form
    12,928.60/19,393.44 = 7,723/x
  3. Step 3: Cross multiply
    12,928.60x = 19,393.44 × 7,723
  4. Step 4: Simplify right side
    12,928.60x = 149,775,537.12
  5. Step 5: Solve for x
    x = 149,775,537.12/12,928.60
  6. Step 6: Final answer
    x = 11,584.82

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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.