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Finding the Fourth Proportional to 28,813.53, 43,218.78 and 8,823.05

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Solution

The fourth proportional to 28,813.53, 43,218.78 and 8,823.05 is: 13,234.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,813.53 : 43,218.78 = 8,823.05 : x
  2. Step 2: Convert to fraction form
    28,813.53/43,218.78 = 8,823.05/x
  3. Step 3: Cross multiply
    28,813.53x = 43,218.78 × 8,823.05
  4. Step 4: Simplify right side
    28,813.53x = 381,321,662.50
  5. Step 5: Solve for x
    x = 381,321,662.50/28,813.53
  6. Step 6: Final answer
    x = 13,234.12

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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.