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Finding the Fourth Proportional to 11,613.51, 17,427.56 and 7,239.51

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Solution

The fourth proportional to 11,613.51, 17,427.56 and 7,239.51 is: 10,863.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.51 : 17,427.56 = 7,239.51 : x
  2. Step 2: Convert to fraction form
    11,613.51/17,427.56 = 7,239.51/x
  3. Step 3: Cross multiply
    11,613.51x = 17,427.56 × 7,239.51
  4. Step 4: Simplify right side
    11,613.51x = 126,166,958.70
  5. Step 5: Solve for x
    x = 126,166,958.70/11,613.51
  6. Step 6: Final answer
    x = 10,863.81

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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.