Home / 11,715.78-17,573.58-4,785.42

Finding the Fourth Proportional to 11,715.78, 17,573.58 and 4,785.42

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Solution

The fourth proportional to 11,715.78, 17,573.58 and 4,785.42 is: 7,178.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.78 : 17,573.58 = 4,785.42 : x
  2. Step 2: Convert to fraction form
    11,715.78/17,573.58 = 4,785.42/x
  3. Step 3: Cross multiply
    11,715.78x = 17,573.58 × 4,785.42
  4. Step 4: Simplify right side
    11,715.78x = 84,096,961.20
  5. Step 5: Solve for x
    x = 84,096,961.20/11,715.78
  6. Step 6: Final answer
    x = 7,178.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.