Home / 18,999.12-28,499.09-6,519.05

Finding the Fourth Proportional to 18,999.12, 28,499.09 and 6,519.05

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Solution

The fourth proportional to 18,999.12, 28,499.09 and 6,519.05 is: 9,778.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.12 : 28,499.09 = 6,519.05 : x
  2. Step 2: Convert to fraction form
    18,999.12/28,499.09 = 6,519.05/x
  3. Step 3: Cross multiply
    18,999.12x = 28,499.09 × 6,519.05
  4. Step 4: Simplify right side
    18,999.12x = 185,786,817.57
  5. Step 5: Solve for x
    x = 185,786,817.57/18,999.12
  6. Step 6: Final answer
    x = 9,778.71

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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.