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Finding the Fourth Proportional to 18,371.22, 27,545.88 and 7,279.50

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Solution

The fourth proportional to 18,371.22, 27,545.88 and 7,279.50 is: 10,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.22 : 27,545.88 = 7,279.50 : x
  2. Step 2: Convert to fraction form
    18,371.22/27,545.88 = 7,279.50/x
  3. Step 3: Cross multiply
    18,371.22x = 27,545.88 × 7,279.50
  4. Step 4: Simplify right side
    18,371.22x = 200,520,233.46
  5. Step 5: Solve for x
    x = 200,520,233.46/18,371.22
  6. Step 6: Final answer
    x = 10,914.91

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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.