Home / 20,872.68-31,259.82-16,154.91

Finding the Fourth Proportional to 20,872.68, 31,259.82 and 16,154.91

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Solution

The fourth proportional to 20,872.68, 31,259.82 and 16,154.91 is: 24,194.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.68 : 31,259.82 = 16,154.91 : x
  2. Step 2: Convert to fraction form
    20,872.68/31,259.82 = 16,154.91/x
  3. Step 3: Cross multiply
    20,872.68x = 31,259.82 × 16,154.91
  4. Step 4: Simplify right side
    20,872.68x = 504,999,497.94
  5. Step 5: Solve for x
    x = 504,999,497.94/20,872.68
  6. Step 6: Final answer
    x = 24,194.28

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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.