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Finding the Fourth Proportional to 13,174.08, 19,760.04 and 3,940.08

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Solution

The fourth proportional to 13,174.08, 19,760.04 and 3,940.08 is: 5,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.08 : 19,760.04 = 3,940.08 : x
  2. Step 2: Convert to fraction form
    13,174.08/19,760.04 = 3,940.08/x
  3. Step 3: Cross multiply
    13,174.08x = 19,760.04 × 3,940.08
  4. Step 4: Simplify right side
    13,174.08x = 77,856,138.40
  5. Step 5: Solve for x
    x = 77,856,138.40/13,174.08
  6. Step 6: Final answer
    x = 5,909.80

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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.