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Finding the Fourth Proportional to 27,169.99, 40,755.12 and 12,368.55

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Solution

The fourth proportional to 27,169.99, 40,755.12 and 12,368.55 is: 18,552.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,169.99 : 40,755.12 = 12,368.55 : x
  2. Step 2: Convert to fraction form
    27,169.99/40,755.12 = 12,368.55/x
  3. Step 3: Cross multiply
    27,169.99x = 40,755.12 × 12,368.55
  4. Step 4: Simplify right side
    27,169.99x = 504,081,739.48
  5. Step 5: Solve for x
    x = 504,081,739.48/27,169.99
  6. Step 6: Final answer
    x = 18,552.89

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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.