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Finding the Fourth Proportional to 13,653.31, 20,481.10 and 3,659.48

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Solution

The fourth proportional to 13,653.31, 20,481.10 and 3,659.48 is: 5,489.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.31 : 20,481.10 = 3,659.48 : x
  2. Step 2: Convert to fraction form
    13,653.31/20,481.10 = 3,659.48/x
  3. Step 3: Cross multiply
    13,653.31x = 20,481.10 × 3,659.48
  4. Step 4: Simplify right side
    13,653.31x = 74,950,055.13
  5. Step 5: Solve for x
    x = 74,950,055.13/13,653.31
  6. Step 6: Final answer
    x = 5,489.52

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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.