Home / 18,979.56-28,469.16-6,499.44

Finding the Fourth Proportional to 18,979.56, 28,469.16 and 6,499.44

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Solution

The fourth proportional to 18,979.56, 28,469.16 and 6,499.44 is: 9,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.56 : 28,469.16 = 6,499.44 : x
  2. Step 2: Convert to fraction form
    18,979.56/28,469.16 = 6,499.44/x
  3. Step 3: Cross multiply
    18,979.56x = 28,469.16 × 6,499.44
  4. Step 4: Simplify right side
    18,979.56x = 185,033,597.27
  5. Step 5: Solve for x
    x = 185,033,597.27/18,979.56
  6. Step 6: Final answer
    x = 9,749.10

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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.