Home / 20,122.43-27,772.88-12,849.84

Finding the Fourth Proportional to 20,122.43, 27,772.88 and 12,849.84

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Solution

The fourth proportional to 20,122.43, 27,772.88 and 12,849.84 is: 17,735.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.43 : 27,772.88 = 12,849.84 : x
  2. Step 2: Convert to fraction form
    20,122.43/27,772.88 = 12,849.84/x
  3. Step 3: Cross multiply
    20,122.43x = 27,772.88 × 12,849.84
  4. Step 4: Simplify right side
    20,122.43x = 356,877,000.09
  5. Step 5: Solve for x
    x = 356,877,000.09/20,122.43
  6. Step 6: Final answer
    x = 17,735.29

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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.