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Finding the Fourth Proportional to 18,613.06, 27,921 and 6,926.38

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Solution

The fourth proportional to 18,613.06, 27,921 and 6,926.38 is: 10,390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.06 : 27,921 = 6,926.38 : x
  2. Step 2: Convert to fraction form
    18,613.06/27,921 = 6,926.38/x
  3. Step 3: Cross multiply
    18,613.06x = 27,921 × 6,926.38
  4. Step 4: Simplify right side
    18,613.06x = 193,391,455.98
  5. Step 5: Solve for x
    x = 193,391,455.98/18,613.06
  6. Step 6: Final answer
    x = 10,390.09

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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.