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Finding the Fourth Proportional to 18,093.71, 27,138.40 and 7,708.43

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Solution

The fourth proportional to 18,093.71, 27,138.40 and 7,708.43 is: 11,561.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,093.71 : 27,138.40 = 7,708.43 : x
  2. Step 2: Convert to fraction form
    18,093.71/27,138.40 = 7,708.43/x
  3. Step 3: Cross multiply
    18,093.71x = 27,138.40 × 7,708.43
  4. Step 4: Simplify right side
    18,093.71x = 209,194,301.75
  5. Step 5: Solve for x
    x = 209,194,301.75/18,093.71
  6. Step 6: Final answer
    x = 11,561.72

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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.