Home / 20,015.86-30,020.38-6,687.34

Finding the Fourth Proportional to 20,015.86, 30,020.38 and 6,687.34

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Solution

The fourth proportional to 20,015.86, 30,020.38 and 6,687.34 is: 10,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.86 : 30,020.38 = 6,687.34 : x
  2. Step 2: Convert to fraction form
    20,015.86/30,020.38 = 6,687.34/x
  3. Step 3: Cross multiply
    20,015.86x = 30,020.38 × 6,687.34
  4. Step 4: Simplify right side
    20,015.86x = 200,756,602.70
  5. Step 5: Solve for x
    x = 200,756,602.70/20,015.86
  6. Step 6: Final answer
    x = 10,029.88

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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.