Home / 11,720.21-17,579.79-3,400.04

Finding the Fourth Proportional to 11,720.21, 17,579.79 and 3,400.04

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Solution

The fourth proportional to 11,720.21, 17,579.79 and 3,400.04 is: 5,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.21 : 17,579.79 = 3,400.04 : x
  2. Step 2: Convert to fraction form
    11,720.21/17,579.79 = 3,400.04/x
  3. Step 3: Cross multiply
    11,720.21x = 17,579.79 × 3,400.04
  4. Step 4: Simplify right side
    11,720.21x = 59,771,901.29
  5. Step 5: Solve for x
    x = 59,771,901.29/11,720.21
  6. Step 6: Final answer
    x = 5,099.90

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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.