Home / 11,817.64-17,720.18-3,496.51

Finding the Fourth Proportional to 11,817.64, 17,720.18 and 3,496.51

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Solution

The fourth proportional to 11,817.64, 17,720.18 and 3,496.51 is: 5,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.64 : 17,720.18 = 3,496.51 : x
  2. Step 2: Convert to fraction form
    11,817.64/17,720.18 = 3,496.51/x
  3. Step 3: Cross multiply
    11,817.64x = 17,720.18 × 3,496.51
  4. Step 4: Simplify right side
    11,817.64x = 61,958,697.97
  5. Step 5: Solve for x
    x = 61,958,697.97/11,817.64
  6. Step 6: Final answer
    x = 5,242.90

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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.