Home / 20,968.92-31,474.62-18,612.36

Finding the Fourth Proportional to 20,968.92, 31,474.62 and 18,612.36

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Solution

The fourth proportional to 20,968.92, 31,474.62 and 18,612.36 is: 27,937.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.92 : 31,474.62 = 18,612.36 : x
  2. Step 2: Convert to fraction form
    20,968.92/31,474.62 = 18,612.36/x
  3. Step 3: Cross multiply
    20,968.92x = 31,474.62 × 18,612.36
  4. Step 4: Simplify right side
    20,968.92x = 585,816,958.30
  5. Step 5: Solve for x
    x = 585,816,958.30/20,968.92
  6. Step 6: Final answer
    x = 27,937.39

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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.