Home / 18,999.25-28,499.28-6,519.22

Finding the Fourth Proportional to 18,999.25, 28,499.28 and 6,519.22

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Solution

The fourth proportional to 18,999.25, 28,499.28 and 6,519.22 is: 9,778.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.25 : 28,499.28 = 6,519.22 : x
  2. Step 2: Convert to fraction form
    18,999.25/28,499.28 = 6,519.22/x
  3. Step 3: Cross multiply
    18,999.25x = 28,499.28 × 6,519.22
  4. Step 4: Simplify right side
    18,999.25x = 185,793,076.16
  5. Step 5: Solve for x
    x = 185,793,076.16/18,999.25
  6. Step 6: Final answer
    x = 9,778.97

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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.