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Finding the Fourth Proportional to 18,954, 26,155.96 and 10,995.68

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Solution

The fourth proportional to 18,954, 26,155.96 and 10,995.68 is: 15,173.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954 : 26,155.96 = 10,995.68 : x
  2. Step 2: Convert to fraction form
    18,954/26,155.96 = 10,995.68/x
  3. Step 3: Cross multiply
    18,954x = 26,155.96 × 10,995.68
  4. Step 4: Simplify right side
    18,954x = 287,602,566.25
  5. Step 5: Solve for x
    x = 287,602,566.25/18,954
  6. Step 6: Final answer
    x = 15,173.71

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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.