Home / 20,108.85-30,163.28-12,673.05

Finding the Fourth Proportional to 20,108.85, 30,163.28 and 12,673.05

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Solution

The fourth proportional to 20,108.85, 30,163.28 and 12,673.05 is: 19,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.85 : 30,163.28 = 12,673.05 : x
  2. Step 2: Convert to fraction form
    20,108.85/30,163.28 = 12,673.05/x
  3. Step 3: Cross multiply
    20,108.85x = 30,163.28 × 12,673.05
  4. Step 4: Simplify right side
    20,108.85x = 382,260,692.24
  5. Step 5: Solve for x
    x = 382,260,692.24/20,108.85
  6. Step 6: Final answer
    x = 19,009.58

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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.