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Finding the Fourth Proportional to 18,447.67, 27,690.33 and 13,502.62

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Solution

The fourth proportional to 18,447.67, 27,690.33 and 13,502.62 is: 20,267.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.67 : 27,690.33 = 13,502.62 : x
  2. Step 2: Convert to fraction form
    18,447.67/27,690.33 = 13,502.62/x
  3. Step 3: Cross multiply
    18,447.67x = 27,690.33 × 13,502.62
  4. Step 4: Simplify right side
    18,447.67x = 373,891,865.21
  5. Step 5: Solve for x
    x = 373,891,865.21/18,447.67
  6. Step 6: Final answer
    x = 20,267.71

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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.