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Finding the Fourth Proportional to 18,121.17, 27,188.68 and 7,035.65

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Solution

The fourth proportional to 18,121.17, 27,188.68 and 7,035.65 is: 10,556.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.17 : 27,188.68 = 7,035.65 : x
  2. Step 2: Convert to fraction form
    18,121.17/27,188.68 = 7,035.65/x
  3. Step 3: Cross multiply
    18,121.17x = 27,188.68 × 7,035.65
  4. Step 4: Simplify right side
    18,121.17x = 191,289,974.67
  5. Step 5: Solve for x
    x = 191,289,974.67/18,121.17
  6. Step 6: Final answer
    x = 10,556.16

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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.