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Finding the Fourth Proportional to 18,628.11, 27,942.08 and 7,534.66

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Solution

The fourth proportional to 18,628.11, 27,942.08 and 7,534.66 is: 11,301.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.11 : 27,942.08 = 7,534.66 : x
  2. Step 2: Convert to fraction form
    18,628.11/27,942.08 = 7,534.66/x
  3. Step 3: Cross multiply
    18,628.11x = 27,942.08 × 7,534.66
  4. Step 4: Simplify right side
    18,628.11x = 210,534,072.49
  5. Step 5: Solve for x
    x = 210,534,072.49/18,628.11
  6. Step 6: Final answer
    x = 11,301.96

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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.