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Finding the Fourth Proportional to 28,201.37, 38,917.95 and 15,626.12

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Solution

The fourth proportional to 28,201.37, 38,917.95 and 15,626.12 is: 21,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.37 : 38,917.95 = 15,626.12 : x
  2. Step 2: Convert to fraction form
    28,201.37/38,917.95 = 15,626.12/x
  3. Step 3: Cross multiply
    28,201.37x = 38,917.95 × 15,626.12
  4. Step 4: Simplify right side
    28,201.37x = 608,136,556.85
  5. Step 5: Solve for x
    x = 608,136,556.85/28,201.37
  6. Step 6: Final answer
    x = 21,564.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.