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Finding the Fourth Proportional to 20,051.69, 30,067.40 and 11,734.20

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Solution

The fourth proportional to 20,051.69, 30,067.40 and 11,734.20 is: 17,595.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,051.69 : 30,067.40 = 11,734.20 : x
  2. Step 2: Convert to fraction form
    20,051.69/30,067.40 = 11,734.20/x
  3. Step 3: Cross multiply
    20,051.69x = 30,067.40 × 11,734.20
  4. Step 4: Simplify right side
    20,051.69x = 352,816,914.42
  5. Step 5: Solve for x
    x = 352,816,914.42/20,051.69
  6. Step 6: Final answer
    x = 17,595.37

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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.