Home / 11,612.12-17,420.70-3,820.64

Finding the Fourth Proportional to 11,612.12, 17,420.70 and 3,820.64

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Solution

The fourth proportional to 11,612.12, 17,420.70 and 3,820.64 is: 5,731.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,612.12 : 17,420.70 = 3,820.64 : x
  2. Step 2: Convert to fraction form
    11,612.12/17,420.70 = 3,820.64/x
  3. Step 3: Cross multiply
    11,612.12x = 17,420.70 × 3,820.64
  4. Step 4: Simplify right side
    11,612.12x = 66,558,136.14
  5. Step 5: Solve for x
    x = 66,558,136.14/11,612.12
  6. Step 6: Final answer
    x = 5,731.78

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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.