Home / 20,690.82-28,554.69-11,735.22

Finding the Fourth Proportional to 20,690.82, 28,554.69 and 11,735.22

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Solution

The fourth proportional to 20,690.82, 28,554.69 and 11,735.22 is: 16,195.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.82 : 28,554.69 = 11,735.22 : x
  2. Step 2: Convert to fraction form
    20,690.82/28,554.69 = 11,735.22/x
  3. Step 3: Cross multiply
    20,690.82x = 28,554.69 × 11,735.22
  4. Step 4: Simplify right side
    20,690.82x = 335,095,569.18
  5. Step 5: Solve for x
    x = 335,095,569.18/20,690.82
  6. Step 6: Final answer
    x = 16,195.37

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1.5x scale

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.