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Finding the Fourth Proportional to 17,986.95, 26,958.03 and 11,415.02

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Solution

The fourth proportional to 17,986.95, 26,958.03 and 11,415.02 is: 17,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,986.95 : 26,958.03 = 11,415.02 : x
  2. Step 2: Convert to fraction form
    17,986.95/26,958.03 = 11,415.02/x
  3. Step 3: Cross multiply
    17,986.95x = 26,958.03 × 11,415.02
  4. Step 4: Simplify right side
    17,986.95x = 307,726,316.82
  5. Step 5: Solve for x
    x = 307,726,316.82/17,986.95
  6. Step 6: Final answer
    x = 17,108.31

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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.