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Finding the Fourth Proportional to 14,298.24, 19,728 and 8,708.48

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Solution

The fourth proportional to 14,298.24, 19,728 and 8,708.48 is: 12,015.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,298.24 : 19,728 = 8,708.48 : x
  2. Step 2: Convert to fraction form
    14,298.24/19,728 = 8,708.48/x
  3. Step 3: Cross multiply
    14,298.24x = 19,728 × 8,708.48
  4. Step 4: Simplify right side
    14,298.24x = 171,800,893.44
  5. Step 5: Solve for x
    x = 171,800,893.44/14,298.24
  6. Step 6: Final answer
    x = 12,015.53

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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.