Home / 12,379.33-18,536.19-6,518.17

Finding the Fourth Proportional to 12,379.33, 18,536.19 and 6,518.17

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Solution

The fourth proportional to 12,379.33, 18,536.19 and 6,518.17 is: 9,759.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.33 : 18,536.19 = 6,518.17 : x
  2. Step 2: Convert to fraction form
    12,379.33/18,536.19 = 6,518.17/x
  3. Step 3: Cross multiply
    12,379.33x = 18,536.19 × 6,518.17
  4. Step 4: Simplify right side
    12,379.33x = 120,822,072.96
  5. Step 5: Solve for x
    x = 120,822,072.96/12,379.33
  6. Step 6: Final answer
    x = 9,759.98

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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.