Home / 11,919.10-16,447.30-6,540.65

Finding the Fourth Proportional to 11,919.10, 16,447.30 and 6,540.65

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Solution

The fourth proportional to 11,919.10, 16,447.30 and 6,540.65 is: 9,025.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.10 : 16,447.30 = 6,540.65 : x
  2. Step 2: Convert to fraction form
    11,919.10/16,447.30 = 6,540.65/x
  3. Step 3: Cross multiply
    11,919.10x = 16,447.30 × 6,540.65
  4. Step 4: Simplify right side
    11,919.10x = 107,576,032.63
  5. Step 5: Solve for x
    x = 107,576,032.63/11,919.10
  6. Step 6: Final answer
    x = 9,025.52

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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.