Home / 11,638.62-17,460.70-3,318.76

Finding the Fourth Proportional to 11,638.62, 17,460.70 and 3,318.76

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Solution

The fourth proportional to 11,638.62, 17,460.70 and 3,318.76 is: 4,978.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,638.62 : 17,460.70 = 3,318.76 : x
  2. Step 2: Convert to fraction form
    11,638.62/17,460.70 = 3,318.76/x
  3. Step 3: Cross multiply
    11,638.62x = 17,460.70 × 3,318.76
  4. Step 4: Simplify right side
    11,638.62x = 57,947,872.73
  5. Step 5: Solve for x
    x = 57,947,872.73/11,638.62
  6. Step 6: Final answer
    x = 4,978.93

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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.