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Finding the Fourth Proportional to 12,893.69, 17,793.11 and 7,228.44

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Solution

The fourth proportional to 12,893.69, 17,793.11 and 7,228.44 is: 9,975.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.69 : 17,793.11 = 7,228.44 : x
  2. Step 2: Convert to fraction form
    12,893.69/17,793.11 = 7,228.44/x
  3. Step 3: Cross multiply
    12,893.69x = 17,793.11 × 7,228.44
  4. Step 4: Simplify right side
    12,893.69x = 128,616,446.12
  5. Step 5: Solve for x
    x = 128,616,446.12/12,893.69
  6. Step 6: Final answer
    x = 9,975.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.