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Finding the Fourth Proportional to 19,234.70, 28,834.64 and 7,544.78

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Solution

The fourth proportional to 19,234.70, 28,834.64 and 7,544.78 is: 11,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,234.70 : 28,834.64 = 7,544.78 : x
  2. Step 2: Convert to fraction form
    19,234.70/28,834.64 = 7,544.78/x
  3. Step 3: Cross multiply
    19,234.70x = 28,834.64 × 7,544.78
  4. Step 4: Simplify right side
    19,234.70x = 217,550,977.46
  5. Step 5: Solve for x
    x = 217,550,977.46/19,234.70
  6. Step 6: Final answer
    x = 11,310.34

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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.