Home / 11,740.90-17,611.69-3,420.73

Finding the Fourth Proportional to 11,740.90, 17,611.69 and 3,420.73

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Solution

The fourth proportional to 11,740.90, 17,611.69 and 3,420.73 is: 5,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,740.90 : 17,611.69 = 3,420.73 : x
  2. Step 2: Convert to fraction form
    11,740.90/17,611.69 = 3,420.73/x
  3. Step 3: Cross multiply
    11,740.90x = 17,611.69 × 3,420.73
  4. Step 4: Simplify right side
    11,740.90x = 60,244,832.06
  5. Step 5: Solve for x
    x = 60,244,832.06/11,740.90
  6. Step 6: Final answer
    x = 5,131.19

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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.