Home / 20,049.72-30,072.80-6,012.88

Finding the Fourth Proportional to 20,049.72, 30,072.80 and 6,012.88

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Solution

The fourth proportional to 20,049.72, 30,072.80 and 6,012.88 is: 9,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,049.72 : 30,072.80 = 6,012.88 : x
  2. Step 2: Convert to fraction form
    20,049.72/30,072.80 = 6,012.88/x
  3. Step 3: Cross multiply
    20,049.72x = 30,072.80 × 6,012.88
  4. Step 4: Simplify right side
    20,049.72x = 180,824,137.66
  5. Step 5: Solve for x
    x = 180,824,137.66/20,049.72
  6. Step 6: Final answer
    x = 9,018.79

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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.