Home / 11,813.90-17,720.88-3,494.06

Finding the Fourth Proportional to 11,813.90, 17,720.88 and 3,494.06

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Solution

The fourth proportional to 11,813.90, 17,720.88 and 3,494.06 is: 5,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.90 : 17,720.88 = 3,494.06 : x
  2. Step 2: Convert to fraction form
    11,813.90/17,720.88 = 3,494.06/x
  3. Step 3: Cross multiply
    11,813.90x = 17,720.88 × 3,494.06
  4. Step 4: Simplify right side
    11,813.90x = 61,917,817.97
  5. Step 5: Solve for x
    x = 61,917,817.97/11,813.90
  6. Step 6: Final answer
    x = 5,241.10

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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.