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Finding the Fourth Proportional to 18,876.22, 28,317.05 and 7,028.99

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Solution

The fourth proportional to 18,876.22, 28,317.05 and 7,028.99 is: 10,544.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.22 : 28,317.05 = 7,028.99 : x
  2. Step 2: Convert to fraction form
    18,876.22/28,317.05 = 7,028.99/x
  3. Step 3: Cross multiply
    18,876.22x = 28,317.05 × 7,028.99
  4. Step 4: Simplify right side
    18,876.22x = 199,040,261.28
  5. Step 5: Solve for x
    x = 199,040,261.28/18,876.22
  6. Step 6: Final answer
    x = 10,544.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.