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Finding the Fourth Proportional to 18,149.50, 25,050.63 and 11,081.89

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Solution

The fourth proportional to 18,149.50, 25,050.63 and 11,081.89 is: 15,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.50 : 25,050.63 = 11,081.89 : x
  2. Step 2: Convert to fraction form
    18,149.50/25,050.63 = 11,081.89/x
  3. Step 3: Cross multiply
    18,149.50x = 25,050.63 × 11,081.89
  4. Step 4: Simplify right side
    18,149.50x = 277,608,326.09
  5. Step 5: Solve for x
    x = 277,608,326.09/18,149.50
  6. Step 6: Final answer
    x = 15,295.65

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1.5x scale

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.