Home / 20,850.35-28,773.36-11,290.14

Finding the Fourth Proportional to 20,850.35, 28,773.36 and 11,290.14

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Solution

The fourth proportional to 20,850.35, 28,773.36 and 11,290.14 is: 15,580.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.35 : 28,773.36 = 11,290.14 : x
  2. Step 2: Convert to fraction form
    20,850.35/28,773.36 = 11,290.14/x
  3. Step 3: Cross multiply
    20,850.35x = 28,773.36 × 11,290.14
  4. Step 4: Simplify right side
    20,850.35x = 324,855,262.67
  5. Step 5: Solve for x
    x = 324,855,262.67/20,850.35
  6. Step 6: Final answer
    x = 15,580.33

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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.