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Finding the Fourth Proportional to 18,018.96, 27,028.64 and 14,147.97

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Solution

The fourth proportional to 18,018.96, 27,028.64 and 14,147.97 is: 21,222.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.96 : 27,028.64 = 14,147.97 : x
  2. Step 2: Convert to fraction form
    18,018.96/27,028.64 = 14,147.97/x
  3. Step 3: Cross multiply
    18,018.96x = 27,028.64 × 14,147.97
  4. Step 4: Simplify right side
    18,018.96x = 382,400,387.86
  5. Step 5: Solve for x
    x = 382,400,387.86/18,018.96
  6. Step 6: Final answer
    x = 21,222.11

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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.