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Finding the Fourth Proportional to 20,163.15, 27,814.50 and 11,982.11

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Solution

The fourth proportional to 20,163.15, 27,814.50 and 11,982.11 is: 16,528.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.15 : 27,814.50 = 11,982.11 : x
  2. Step 2: Convert to fraction form
    20,163.15/27,814.50 = 11,982.11/x
  3. Step 3: Cross multiply
    20,163.15x = 27,814.50 × 11,982.11
  4. Step 4: Simplify right side
    20,163.15x = 333,276,259.52
  5. Step 5: Solve for x
    x = 333,276,259.52/20,163.15
  6. Step 6: Final answer
    x = 16,528.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.