Home / 11,146.38-15,380.96-6,429.74

Finding the Fourth Proportional to 11,146.38, 15,380.96 and 6,429.74

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Solution

The fourth proportional to 11,146.38, 15,380.96 and 6,429.74 is: 8,872.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,146.38 : 15,380.96 = 6,429.74 : x
  2. Step 2: Convert to fraction form
    11,146.38/15,380.96 = 6,429.74/x
  3. Step 3: Cross multiply
    11,146.38x = 15,380.96 × 6,429.74
  4. Step 4: Simplify right side
    11,146.38x = 98,895,573.75
  5. Step 5: Solve for x
    x = 98,895,573.75/11,146.38
  6. Step 6: Final answer
    x = 8,872.44

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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.