Home / 19,103.45-28,644.23-8,000.78

Finding the Fourth Proportional to 19,103.45, 28,644.23 and 8,000.78

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Solution

The fourth proportional to 19,103.45, 28,644.23 and 8,000.78 is: 11,996.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,103.45 : 28,644.23 = 8,000.78 : x
  2. Step 2: Convert to fraction form
    19,103.45/28,644.23 = 8,000.78/x
  3. Step 3: Cross multiply
    19,103.45x = 28,644.23 × 8,000.78
  4. Step 4: Simplify right side
    19,103.45x = 229,176,059.28
  5. Step 5: Solve for x
    x = 229,176,059.28/19,103.45
  6. Step 6: Final answer
    x = 11,996.58

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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.