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Finding the Fourth Proportional to 11,951.14, 17,919.51 and 7,018.42

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Solution

The fourth proportional to 11,951.14, 17,919.51 and 7,018.42 is: 10,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.14 : 17,919.51 = 7,018.42 : x
  2. Step 2: Convert to fraction form
    11,951.14/17,919.51 = 7,018.42/x
  3. Step 3: Cross multiply
    11,951.14x = 17,919.51 × 7,018.42
  4. Step 4: Simplify right side
    11,951.14x = 125,766,647.37
  5. Step 5: Solve for x
    x = 125,766,647.37/11,951.14
  6. Step 6: Final answer
    x = 10,523.40

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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.