Home / 20,474.60-30,744.30-15,549.80

Finding the Fourth Proportional to 20,474.60, 30,744.30 and 15,549.80

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Solution

The fourth proportional to 20,474.60, 30,744.30 and 15,549.80 is: 23,349.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.60 : 30,744.30 = 15,549.80 : x
  2. Step 2: Convert to fraction form
    20,474.60/30,744.30 = 15,549.80/x
  3. Step 3: Cross multiply
    20,474.60x = 30,744.30 × 15,549.80
  4. Step 4: Simplify right side
    20,474.60x = 478,067,716.14
  5. Step 5: Solve for x
    x = 478,067,716.14/20,474.60
  6. Step 6: Final answer
    x = 23,349.31

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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.