Home / 13,845.53-19,104.31-8,181.20

Finding the Fourth Proportional to 13,845.53, 19,104.31 and 8,181.20

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Solution

The fourth proportional to 13,845.53, 19,104.31 and 8,181.20 is: 11,288.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.53 : 19,104.31 = 8,181.20 : x
  2. Step 2: Convert to fraction form
    13,845.53/19,104.31 = 8,181.20/x
  3. Step 3: Cross multiply
    13,845.53x = 19,104.31 × 8,181.20
  4. Step 4: Simplify right side
    13,845.53x = 156,296,180.97
  5. Step 5: Solve for x
    x = 156,296,180.97/13,845.53
  6. Step 6: Final answer
    x = 11,288.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.