Home / 15,806.33-21,813.26-8,636.94

Finding the Fourth Proportional to 15,806.33, 21,813.26 and 8,636.94

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Solution

The fourth proportional to 15,806.33, 21,813.26 and 8,636.94 is: 11,919.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.33 : 21,813.26 = 8,636.94 : x
  2. Step 2: Convert to fraction form
    15,806.33/21,813.26 = 8,636.94/x
  3. Step 3: Cross multiply
    15,806.33x = 21,813.26 × 8,636.94
  4. Step 4: Simplify right side
    15,806.33x = 188,399,774.64
  5. Step 5: Solve for x
    x = 188,399,774.64/15,806.33
  6. Step 6: Final answer
    x = 11,919.26

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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.