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Finding the Fourth Proportional to 19,697.75, 29,513.73 and 13,843.88

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Solution

The fourth proportional to 19,697.75, 29,513.73 and 13,843.88 is: 20,742.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,697.75 : 29,513.73 = 13,843.88 : x
  2. Step 2: Convert to fraction form
    19,697.75/29,513.73 = 13,843.88/x
  3. Step 3: Cross multiply
    19,697.75x = 29,513.73 × 13,843.88
  4. Step 4: Simplify right side
    19,697.75x = 408,584,536.47
  5. Step 5: Solve for x
    x = 408,584,536.47/19,697.75
  6. Step 6: Final answer
    x = 20,742.70

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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.