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Finding the Fourth Proportional to 12,894.45, 17,793.10 and 7,228.83

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Solution

The fourth proportional to 12,894.45, 17,793.10 and 7,228.83 is: 9,975.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,894.45 : 17,793.10 = 7,228.83 : x
  2. Step 2: Convert to fraction form
    12,894.45/17,793.10 = 7,228.83/x
  3. Step 3: Cross multiply
    12,894.45x = 17,793.10 × 7,228.83
  4. Step 4: Simplify right side
    12,894.45x = 128,623,295.07
  5. Step 5: Solve for x
    x = 128,623,295.07/12,894.45
  6. Step 6: Final answer
    x = 9,975.09

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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.