Home / 20,174.97-30,230.85-12,763.77

Finding the Fourth Proportional to 20,174.97, 30,230.85 and 12,763.77

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Solution

The fourth proportional to 20,174.97, 30,230.85 and 12,763.77 is: 19,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.97 : 30,230.85 = 12,763.77 : x
  2. Step 2: Convert to fraction form
    20,174.97/30,230.85 = 12,763.77/x
  3. Step 3: Cross multiply
    20,174.97x = 30,230.85 × 12,763.77
  4. Step 4: Simplify right side
    20,174.97x = 385,859,616.30
  5. Step 5: Solve for x
    x = 385,859,616.30/20,174.97
  6. Step 6: Final answer
    x = 19,125.66

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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.