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Finding the Fourth Proportional to 18,550.79, 27,862.77 and 15,939.62

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Solution

The fourth proportional to 18,550.79, 27,862.77 and 15,939.62 is: 23,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,550.79 : 27,862.77 = 15,939.62 : x
  2. Step 2: Convert to fraction form
    18,550.79/27,862.77 = 15,939.62/x
  3. Step 3: Cross multiply
    18,550.79x = 27,862.77 × 15,939.62
  4. Step 4: Simplify right side
    18,550.79x = 444,121,965.95
  5. Step 5: Solve for x
    x = 444,121,965.95/18,550.79
  6. Step 6: Final answer
    x = 23,940.87

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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.