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Finding the Fourth Proportional to 18,236.92, 27,347.46 and 7,711.72

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Solution

The fourth proportional to 18,236.92, 27,347.46 and 7,711.72 is: 11,564.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.92 : 27,347.46 = 7,711.72 : x
  2. Step 2: Convert to fraction form
    18,236.92/27,347.46 = 7,711.72/x
  3. Step 3: Cross multiply
    18,236.92x = 27,347.46 × 7,711.72
  4. Step 4: Simplify right side
    18,236.92x = 210,895,954.23
  5. Step 5: Solve for x
    x = 210,895,954.23/18,236.92
  6. Step 6: Final answer
    x = 11,564.23

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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.