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Finding the Fourth Proportional to 18,613.28, 27,921.29 and 6,926.50

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Solution

The fourth proportional to 18,613.28, 27,921.29 and 6,926.50 is: 10,390.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.28 : 27,921.29 = 6,926.50 : x
  2. Step 2: Convert to fraction form
    18,613.28/27,921.29 = 6,926.50/x
  3. Step 3: Cross multiply
    18,613.28x = 27,921.29 × 6,926.50
  4. Step 4: Simplify right side
    18,613.28x = 193,396,815.19
  5. Step 5: Solve for x
    x = 193,396,815.19/18,613.28
  6. Step 6: Final answer
    x = 10,390.26

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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.