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Finding the Fourth Proportional to 18,829.52, 28,245.16 and 8,448.56

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Solution

The fourth proportional to 18,829.52, 28,245.16 and 8,448.56 is: 12,673.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.52 : 28,245.16 = 8,448.56 : x
  2. Step 2: Convert to fraction form
    18,829.52/28,245.16 = 8,448.56/x
  3. Step 3: Cross multiply
    18,829.52x = 28,245.16 × 8,448.56
  4. Step 4: Simplify right side
    18,829.52x = 238,630,928.97
  5. Step 5: Solve for x
    x = 238,630,928.97/18,829.52
  6. Step 6: Final answer
    x = 12,673.23

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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.