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Finding the Fourth Proportional to 18,895.04, 28,342.56 and 8,494.64

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Solution

The fourth proportional to 18,895.04, 28,342.56 and 8,494.64 is: 12,741.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.04 : 28,342.56 = 8,494.64 : x
  2. Step 2: Convert to fraction form
    18,895.04/28,342.56 = 8,494.64/x
  3. Step 3: Cross multiply
    18,895.04x = 28,342.56 × 8,494.64
  4. Step 4: Simplify right side
    18,895.04x = 240,759,843.88
  5. Step 5: Solve for x
    x = 240,759,843.88/18,895.04
  6. Step 6: Final answer
    x = 12,741.96

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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.