Home / 12,556.75-18,828.69-6,636.81

Finding the Fourth Proportional to 12,556.75, 18,828.69 and 6,636.81

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Solution

The fourth proportional to 12,556.75, 18,828.69 and 6,636.81 is: 9,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.75 : 18,828.69 = 6,636.81 : x
  2. Step 2: Convert to fraction form
    12,556.75/18,828.69 = 6,636.81/x
  3. Step 3: Cross multiply
    12,556.75x = 18,828.69 × 6,636.81
  4. Step 4: Simplify right side
    12,556.75x = 124,962,438.08
  5. Step 5: Solve for x
    x = 124,962,438.08/12,556.75
  6. Step 6: Final answer
    x = 9,951.81

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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.