Home / 13,842.72-20,764.09-3,454.47

Finding the Fourth Proportional to 13,842.72, 20,764.09 and 3,454.47

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Solution

The fourth proportional to 13,842.72, 20,764.09 and 3,454.47 is: 5,181.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.72 : 20,764.09 = 3,454.47 : x
  2. Step 2: Convert to fraction form
    13,842.72/20,764.09 = 3,454.47/x
  3. Step 3: Cross multiply
    13,842.72x = 20,764.09 × 3,454.47
  4. Step 4: Simplify right side
    13,842.72x = 71,728,969.26
  5. Step 5: Solve for x
    x = 71,728,969.26/13,842.72
  6. Step 6: Final answer
    x = 5,181.71

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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.