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Finding the Fourth Proportional to 28,873.44, 43,281 and 11,336.40

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Solution

The fourth proportional to 28,873.44, 43,281 and 11,336.40 is: 16,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,873.44 : 43,281 = 11,336.40 : x
  2. Step 2: Convert to fraction form
    28,873.44/43,281 = 11,336.40/x
  3. Step 3: Cross multiply
    28,873.44x = 43,281 × 11,336.40
  4. Step 4: Simplify right side
    28,873.44x = 490,650,728.40
  5. Step 5: Solve for x
    x = 490,650,728.40/28,873.44
  6. Step 6: Final answer
    x = 16,993.15

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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.