Home / 20,850.15-28,773.25-11,290.14

Finding the Fourth Proportional to 20,850.15, 28,773.25 and 11,290.14

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Solution

The fourth proportional to 20,850.15, 28,773.25 and 11,290.14 is: 15,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.15 : 28,773.25 = 11,290.14 : x
  2. Step 2: Convert to fraction form
    20,850.15/28,773.25 = 11,290.14/x
  3. Step 3: Cross multiply
    20,850.15x = 28,773.25 × 11,290.14
  4. Step 4: Simplify right side
    20,850.15x = 324,854,020.76
  5. Step 5: Solve for x
    x = 324,854,020.76/20,850.15
  6. Step 6: Final answer
    x = 15,580.42

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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.