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Finding the Fourth Proportional to 18,189.96, 27,317.16 and 11,962.68

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Solution

The fourth proportional to 18,189.96, 27,317.16 and 11,962.68 is: 17,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.96 : 27,317.16 = 11,962.68 : x
  2. Step 2: Convert to fraction form
    18,189.96/27,317.16 = 11,962.68/x
  3. Step 3: Cross multiply
    18,189.96x = 27,317.16 × 11,962.68
  4. Step 4: Simplify right side
    18,189.96x = 326,786,443.59
  5. Step 5: Solve for x
    x = 326,786,443.59/18,189.96
  6. Step 6: Final answer
    x = 17,965.21

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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.