Home / 11,774.56-17,663.64-3,982.78

Finding the Fourth Proportional to 11,774.56, 17,663.64 and 3,982.78

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Solution

The fourth proportional to 11,774.56, 17,663.64 and 3,982.78 is: 5,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,774.56 : 17,663.64 = 3,982.78 : x
  2. Step 2: Convert to fraction form
    11,774.56/17,663.64 = 3,982.78/x
  3. Step 3: Cross multiply
    11,774.56x = 17,663.64 × 3,982.78
  4. Step 4: Simplify right side
    11,774.56x = 70,350,392.12
  5. Step 5: Solve for x
    x = 70,350,392.12/11,774.56
  6. Step 6: Final answer
    x = 5,974.78

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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.