Home / 12,185.24-16,815.70-6,880.20

Finding the Fourth Proportional to 12,185.24, 16,815.70 and 6,880.20

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Solution

The fourth proportional to 12,185.24, 16,815.70 and 6,880.20 is: 9,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.24 : 16,815.70 = 6,880.20 : x
  2. Step 2: Convert to fraction form
    12,185.24/16,815.70 = 6,880.20/x
  3. Step 3: Cross multiply
    12,185.24x = 16,815.70 × 6,880.20
  4. Step 4: Simplify right side
    12,185.24x = 115,695,379.14
  5. Step 5: Solve for x
    x = 115,695,379.14/12,185.24
  6. Step 6: Final answer
    x = 9,494.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.