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Finding the Fourth Proportional to 15,216.72, 22,786.52 and 12,745.36

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Solution

The fourth proportional to 15,216.72, 22,786.52 and 12,745.36 is: 19,085.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.72 : 22,786.52 = 12,745.36 : x
  2. Step 2: Convert to fraction form
    15,216.72/22,786.52 = 12,745.36/x
  3. Step 3: Cross multiply
    15,216.72x = 22,786.52 × 12,745.36
  4. Step 4: Simplify right side
    15,216.72x = 290,422,400.55
  5. Step 5: Solve for x
    x = 290,422,400.55/15,216.72
  6. Step 6: Final answer
    x = 19,085.74

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