Home / 19,676.43-27,155.70-12,121.29

Finding the Fourth Proportional to 19,676.43, 27,155.70 and 12,121.29

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Solution

The fourth proportional to 19,676.43, 27,155.70 and 12,121.29 is: 16,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,676.43 : 27,155.70 = 12,121.29 : x
  2. Step 2: Convert to fraction form
    19,676.43/27,155.70 = 12,121.29/x
  3. Step 3: Cross multiply
    19,676.43x = 27,155.70 × 12,121.29
  4. Step 4: Simplify right side
    19,676.43x = 329,162,114.85
  5. Step 5: Solve for x
    x = 329,162,114.85/19,676.43
  6. Step 6: Final answer
    x = 16,728.75

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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.