Home / 13,539.82-20,310.14-3,679.31

Finding the Fourth Proportional to 13,539.82, 20,310.14 and 3,679.31

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Solution

The fourth proportional to 13,539.82, 20,310.14 and 3,679.31 is: 5,519.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.82 : 20,310.14 = 3,679.31 : x
  2. Step 2: Convert to fraction form
    13,539.82/20,310.14 = 3,679.31/x
  3. Step 3: Cross multiply
    13,539.82x = 20,310.14 × 3,679.31
  4. Step 4: Simplify right side
    13,539.82x = 74,727,199.65
  5. Step 5: Solve for x
    x = 74,727,199.65/13,539.82
  6. Step 6: Final answer
    x = 5,519.07

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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.