Home / 20,131.14-30,178.20-6,974.31

Finding the Fourth Proportional to 20,131.14, 30,178.20 and 6,974.31

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Solution

The fourth proportional to 20,131.14, 30,178.20 and 6,974.31 is: 10,455.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.14 : 30,178.20 = 6,974.31 : x
  2. Step 2: Convert to fraction form
    20,131.14/30,178.20 = 6,974.31/x
  3. Step 3: Cross multiply
    20,131.14x = 30,178.20 × 6,974.31
  4. Step 4: Simplify right side
    20,131.14x = 210,472,122.04
  5. Step 5: Solve for x
    x = 210,472,122.04/20,131.14
  6. Step 6: Final answer
    x = 10,455.05

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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.