Home / 26,172.55-39,245.68-12,120.49

Finding the Fourth Proportional to 26,172.55, 39,245.68 and 12,120.49

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Solution

The fourth proportional to 26,172.55, 39,245.68 and 12,120.49 is: 18,174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,172.55 : 39,245.68 = 12,120.49 : x
  2. Step 2: Convert to fraction form
    26,172.55/39,245.68 = 12,120.49/x
  3. Step 3: Cross multiply
    26,172.55x = 39,245.68 × 12,120.49
  4. Step 4: Simplify right side
    26,172.55x = 475,676,871.98
  5. Step 5: Solve for x
    x = 475,676,871.98/26,172.55
  6. Step 6: Final answer
    x = 18,174.65

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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.