Home / 12,180.08-16,811.76-6,878

Finding the Fourth Proportional to 12,180.08, 16,811.76 and 6,878

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Solution

The fourth proportional to 12,180.08, 16,811.76 and 6,878 is: 9,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.08 : 16,811.76 = 6,878 : x
  2. Step 2: Convert to fraction form
    12,180.08/16,811.76 = 6,878/x
  3. Step 3: Cross multiply
    12,180.08x = 16,811.76 × 6,878
  4. Step 4: Simplify right side
    12,180.08x = 115,631,285.28
  5. Step 5: Solve for x
    x = 115,631,285.28/12,180.08
  6. Step 6: Final answer
    x = 9,493.48

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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.