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Finding the Fourth Proportional to 18,184.98, 25,141.29 and 15,969.90

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Solution

The fourth proportional to 18,184.98, 25,141.29 and 15,969.90 is: 22,078.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,184.98 : 25,141.29 = 15,969.90 : x
  2. Step 2: Convert to fraction form
    18,184.98/25,141.29 = 15,969.90/x
  3. Step 3: Cross multiply
    18,184.98x = 25,141.29 × 15,969.90
  4. Step 4: Simplify right side
    18,184.98x = 401,503,887.17
  5. Step 5: Solve for x
    x = 401,503,887.17/18,184.98
  6. Step 6: Final answer
    x = 22,078.87

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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.