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Finding the Fourth Proportional to 18,704.76, 28,016.94 and 8,829.24

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Solution

The fourth proportional to 18,704.76, 28,016.94 and 8,829.24 is: 13,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.76 : 28,016.94 = 8,829.24 : x
  2. Step 2: Convert to fraction form
    18,704.76/28,016.94 = 8,829.24/x
  3. Step 3: Cross multiply
    18,704.76x = 28,016.94 × 8,829.24
  4. Step 4: Simplify right side
    18,704.76x = 247,368,287.33
  5. Step 5: Solve for x
    x = 247,368,287.33/18,704.76
  6. Step 6: Final answer
    x = 13,224.88

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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.