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Finding the Fourth Proportional to 18,735.66, 28,052.82 and 11,698.83

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Solution

The fourth proportional to 18,735.66, 28,052.82 and 11,698.83 is: 17,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.66 : 28,052.82 = 11,698.83 : x
  2. Step 2: Convert to fraction form
    18,735.66/28,052.82 = 11,698.83/x
  3. Step 3: Cross multiply
    18,735.66x = 28,052.82 × 11,698.83
  4. Step 4: Simplify right side
    18,735.66x = 328,185,172.20
  5. Step 5: Solve for x
    x = 328,185,172.20/18,735.66
  6. Step 6: Final answer
    x = 17,516.61

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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.