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Finding the Fourth Proportional to 12,857, 19,282.62 and 6,280.04

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Solution

The fourth proportional to 12,857, 19,282.62 and 6,280.04 is: 9,418.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857 : 19,282.62 = 6,280.04 : x
  2. Step 2: Convert to fraction form
    12,857/19,282.62 = 6,280.04/x
  3. Step 3: Cross multiply
    12,857x = 19,282.62 × 6,280.04
  4. Step 4: Simplify right side
    12,857x = 121,095,624.90
  5. Step 5: Solve for x
    x = 121,095,624.90/12,857
  6. Step 6: Final answer
    x = 9,418.65

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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.