Home / 21,855.42-30,161.67-16,540.86

Finding the Fourth Proportional to 21,855.42, 30,161.67 and 16,540.86

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Solution

The fourth proportional to 21,855.42, 30,161.67 and 16,540.86 is: 22,827.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.42 : 30,161.67 = 16,540.86 : x
  2. Step 2: Convert to fraction form
    21,855.42/30,161.67 = 16,540.86/x
  3. Step 3: Cross multiply
    21,855.42x = 30,161.67 × 16,540.86
  4. Step 4: Simplify right side
    21,855.42x = 498,899,960.84
  5. Step 5: Solve for x
    x = 498,899,960.84/21,855.42
  6. Step 6: Final answer
    x = 22,827.29

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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.