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Finding the Fourth Proportional to 20,169.88, 27,862.88 and 16,163.32

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Solution

The fourth proportional to 20,169.88, 27,862.88 and 16,163.32 is: 22,328.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.88 : 27,862.88 = 16,163.32 : x
  2. Step 2: Convert to fraction form
    20,169.88/27,862.88 = 16,163.32/x
  3. Step 3: Cross multiply
    20,169.88x = 27,862.88 × 16,163.32
  4. Step 4: Simplify right side
    20,169.88x = 450,356,645.56
  5. Step 5: Solve for x
    x = 450,356,645.56/20,169.88
  6. Step 6: Final answer
    x = 22,328.18

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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.