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Finding the Fourth Proportional to 19,480.40, 29,177.40 and 11,704.40

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Solution

The fourth proportional to 19,480.40, 29,177.40 and 11,704.40 is: 17,530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,480.40 : 29,177.40 = 11,704.40 : x
  2. Step 2: Convert to fraction form
    19,480.40/29,177.40 = 11,704.40/x
  3. Step 3: Cross multiply
    19,480.40x = 29,177.40 × 11,704.40
  4. Step 4: Simplify right side
    19,480.40x = 341,503,960.56
  5. Step 5: Solve for x
    x = 341,503,960.56/19,480.40
  6. Step 6: Final answer
    x = 17,530.64

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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.