Home / 20,127.09-30,190.68-6,979.47

Finding the Fourth Proportional to 20,127.09, 30,190.68 and 6,979.47

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Solution

The fourth proportional to 20,127.09, 30,190.68 and 6,979.47 is: 10,469.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.09 : 30,190.68 = 6,979.47 : x
  2. Step 2: Convert to fraction form
    20,127.09/30,190.68 = 6,979.47/x
  3. Step 3: Cross multiply
    20,127.09x = 30,190.68 × 6,979.47
  4. Step 4: Simplify right side
    20,127.09x = 210,714,945.34
  5. Step 5: Solve for x
    x = 210,714,945.34/20,127.09
  6. Step 6: Final answer
    x = 10,469.22

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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.