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Finding the Fourth Proportional to 28,857.93, 43,286.41 and 9,136.45

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Solution

The fourth proportional to 28,857.93, 43,286.41 and 9,136.45 is: 13,704.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.93 : 43,286.41 = 9,136.45 : x
  2. Step 2: Convert to fraction form
    28,857.93/43,286.41 = 9,136.45/x
  3. Step 3: Cross multiply
    28,857.93x = 43,286.41 × 9,136.45
  4. Step 4: Simplify right side
    28,857.93x = 395,484,120.64
  5. Step 5: Solve for x
    x = 395,484,120.64/28,857.93
  6. Step 6: Final answer
    x = 13,704.52

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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.