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Finding the Fourth Proportional to 18,371.67, 27,554.04 and 7,126.99

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Solution

The fourth proportional to 18,371.67, 27,554.04 and 7,126.99 is: 10,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.67 : 27,554.04 = 7,126.99 : x
  2. Step 2: Convert to fraction form
    18,371.67/27,554.04 = 7,126.99/x
  3. Step 3: Cross multiply
    18,371.67x = 27,554.04 × 7,126.99
  4. Step 4: Simplify right side
    18,371.67x = 196,377,313.69
  5. Step 5: Solve for x
    x = 196,377,313.69/18,371.67
  6. Step 6: Final answer
    x = 10,689.14

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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.