Home / 20,850.28-28,773.23-11,290.19

Finding the Fourth Proportional to 20,850.28, 28,773.23 and 11,290.19

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Solution

The fourth proportional to 20,850.28, 28,773.23 and 11,290.19 is: 15,580.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.28 : 28,773.23 = 11,290.19 : x
  2. Step 2: Convert to fraction form
    20,850.28/28,773.23 = 11,290.19/x
  3. Step 3: Cross multiply
    20,850.28x = 28,773.23 × 11,290.19
  4. Step 4: Simplify right side
    20,850.28x = 324,855,033.30
  5. Step 5: Solve for x
    x = 324,855,033.30/20,850.28
  6. Step 6: Final answer
    x = 15,580.37

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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.