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Finding the Fourth Proportional to 18,929.44, 26,098.37 and 15,513.88

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Solution

The fourth proportional to 18,929.44, 26,098.37 and 15,513.88 is: 21,389.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.44 : 26,098.37 = 15,513.88 : x
  2. Step 2: Convert to fraction form
    18,929.44/26,098.37 = 15,513.88/x
  3. Step 3: Cross multiply
    18,929.44x = 26,098.37 × 15,513.88
  4. Step 4: Simplify right side
    18,929.44x = 404,886,837.56
  5. Step 5: Solve for x
    x = 404,886,837.56/18,929.44
  6. Step 6: Final answer
    x = 21,389.27

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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.