Home / 12,510-18,786.46-11,107.58

Finding the Fourth Proportional to 12,510, 18,786.46 and 11,107.58

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Solution

The fourth proportional to 12,510, 18,786.46 and 11,107.58 is: 16,680.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510 : 18,786.46 = 11,107.58 : x
  2. Step 2: Convert to fraction form
    12,510/18,786.46 = 11,107.58/x
  3. Step 3: Cross multiply
    12,510x = 18,786.46 × 11,107.58
  4. Step 4: Simplify right side
    12,510x = 208,672,107.37
  5. Step 5: Solve for x
    x = 208,672,107.37/12,510
  6. Step 6: Final answer
    x = 16,680.42

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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.