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Finding the Fourth Proportional to 18,791.08, 28,184.38 and 4,941.16

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Solution

The fourth proportional to 18,791.08, 28,184.38 and 4,941.16 is: 7,411.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.08 : 28,184.38 = 4,941.16 : x
  2. Step 2: Convert to fraction form
    18,791.08/28,184.38 = 4,941.16/x
  3. Step 3: Cross multiply
    18,791.08x = 28,184.38 × 4,941.16
  4. Step 4: Simplify right side
    18,791.08x = 139,263,531.08
  5. Step 5: Solve for x
    x = 139,263,531.08/18,791.08
  6. Step 6: Final answer
    x = 7,411.15

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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.