Home / 19,857.92-29,794.59-8,756.78

Finding the Fourth Proportional to 19,857.92, 29,794.59 and 8,756.78

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Solution

The fourth proportional to 19,857.92, 29,794.59 and 8,756.78 is: 13,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.92 : 29,794.59 = 8,756.78 : x
  2. Step 2: Convert to fraction form
    19,857.92/29,794.59 = 8,756.78/x
  3. Step 3: Cross multiply
    19,857.92x = 29,794.59 × 8,756.78
  4. Step 4: Simplify right side
    19,857.92x = 260,904,520.85
  5. Step 5: Solve for x
    x = 260,904,520.85/19,857.92
  6. Step 6: Final answer
    x = 13,138.57

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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.