Home / 12,126.18-18,170.68-8,162.77

Finding the Fourth Proportional to 12,126.18, 18,170.68 and 8,162.77

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Solution

The fourth proportional to 12,126.18, 18,170.68 and 8,162.77 is: 12,231.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.18 : 18,170.68 = 8,162.77 : x
  2. Step 2: Convert to fraction form
    12,126.18/18,170.68 = 8,162.77/x
  3. Step 3: Cross multiply
    12,126.18x = 18,170.68 × 8,162.77
  4. Step 4: Simplify right side
    12,126.18x = 148,323,081.58
  5. Step 5: Solve for x
    x = 148,323,081.58/12,126.18
  6. Step 6: Final answer
    x = 12,231.64

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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.