Home / 11,955.78-16,499.43-6,651.90

Finding the Fourth Proportional to 11,955.78, 16,499.43 and 6,651.90

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Solution

The fourth proportional to 11,955.78, 16,499.43 and 6,651.90 is: 9,179.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,955.78 : 16,499.43 = 6,651.90 : x
  2. Step 2: Convert to fraction form
    11,955.78/16,499.43 = 6,651.90/x
  3. Step 3: Cross multiply
    11,955.78x = 16,499.43 × 6,651.90
  4. Step 4: Simplify right side
    11,955.78x = 109,752,558.42
  5. Step 5: Solve for x
    x = 109,752,558.42/11,955.78
  6. Step 6: Final answer
    x = 9,179.87

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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.