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Finding the Fourth Proportional to 18,367.72, 27,559.26 and 7,976.68

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Solution

The fourth proportional to 18,367.72, 27,559.26 and 7,976.68 is: 11,968.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.72 : 27,559.26 = 7,976.68 : x
  2. Step 2: Convert to fraction form
    18,367.72/27,559.26 = 7,976.68/x
  3. Step 3: Cross multiply
    18,367.72x = 27,559.26 × 7,976.68
  4. Step 4: Simplify right side
    18,367.72x = 219,831,398.06
  5. Step 5: Solve for x
    x = 219,831,398.06/18,367.72
  6. Step 6: Final answer
    x = 11,968.36

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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.