Home / 20,744.68-31,116.94-5,162.30

Finding the Fourth Proportional to 20,744.68, 31,116.94 and 5,162.30

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Solution

The fourth proportional to 20,744.68, 31,116.94 and 5,162.30 is: 7,743.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.68 : 31,116.94 = 5,162.30 : x
  2. Step 2: Convert to fraction form
    20,744.68/31,116.94 = 5,162.30/x
  3. Step 3: Cross multiply
    20,744.68x = 31,116.94 × 5,162.30
  4. Step 4: Simplify right side
    20,744.68x = 160,634,979.36
  5. Step 5: Solve for x
    x = 160,634,979.36/20,744.68
  6. Step 6: Final answer
    x = 7,743.43

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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.