Home / 12,165.45-16,789.83-6,860.16

Finding the Fourth Proportional to 12,165.45, 16,789.83 and 6,860.16

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Solution

The fourth proportional to 12,165.45, 16,789.83 and 6,860.16 is: 9,467.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.45 : 16,789.83 = 6,860.16 : x
  2. Step 2: Convert to fraction form
    12,165.45/16,789.83 = 6,860.16/x
  3. Step 3: Cross multiply
    12,165.45x = 16,789.83 × 6,860.16
  4. Step 4: Simplify right side
    12,165.45x = 115,180,920.17
  5. Step 5: Solve for x
    x = 115,180,920.17/12,165.45
  6. Step 6: Final answer
    x = 9,467.87

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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.