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Finding the Fourth Proportional to 18,668.39, 27,998.73 and 9,176.67

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Solution

The fourth proportional to 18,668.39, 27,998.73 and 9,176.67 is: 13,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.39 : 27,998.73 = 9,176.67 : x
  2. Step 2: Convert to fraction form
    18,668.39/27,998.73 = 9,176.67/x
  3. Step 3: Cross multiply
    18,668.39x = 27,998.73 × 9,176.67
  4. Step 4: Simplify right side
    18,668.39x = 256,935,105.63
  5. Step 5: Solve for x
    x = 256,935,105.63/18,668.39
  6. Step 6: Final answer
    x = 13,763.11

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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.