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Finding the Fourth Proportional to 18,986.29, 26,201.28 and 10,488.63

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Solution

The fourth proportional to 18,986.29, 26,201.28 and 10,488.63 is: 14,474.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.29 : 26,201.28 = 10,488.63 : x
  2. Step 2: Convert to fraction form
    18,986.29/26,201.28 = 10,488.63/x
  3. Step 3: Cross multiply
    18,986.29x = 26,201.28 × 10,488.63
  4. Step 4: Simplify right side
    18,986.29x = 274,815,531.45
  5. Step 5: Solve for x
    x = 274,815,531.45/18,986.29
  6. Step 6: Final answer
    x = 14,474.42

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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.