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Finding the Fourth Proportional to 18,941.93, 28,416.07 and 5,791.22

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Solution

The fourth proportional to 18,941.93, 28,416.07 and 5,791.22 is: 8,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.93 : 28,416.07 = 5,791.22 : x
  2. Step 2: Convert to fraction form
    18,941.93/28,416.07 = 5,791.22/x
  3. Step 3: Cross multiply
    18,941.93x = 28,416.07 × 5,791.22
  4. Step 4: Simplify right side
    18,941.93x = 164,563,684.62
  5. Step 5: Solve for x
    x = 164,563,684.62/18,941.93
  6. Step 6: Final answer
    x = 8,687.80

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1.5x scale

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.