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Finding the Fourth Proportional to 16,787.40, 25,152.30 and 8,003.40

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Solution

The fourth proportional to 16,787.40, 25,152.30 and 8,003.40 is: 11,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,787.40 : 25,152.30 = 8,003.40 : x
  2. Step 2: Convert to fraction form
    16,787.40/25,152.30 = 8,003.40/x
  3. Step 3: Cross multiply
    16,787.40x = 25,152.30 × 8,003.40
  4. Step 4: Simplify right side
    16,787.40x = 201,303,917.82
  5. Step 5: Solve for x
    x = 201,303,917.82/16,787.40
  6. Step 6: Final answer
    x = 11,991.37

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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.