Home / 20,004.05-30,009.72-6,857.75

Finding the Fourth Proportional to 20,004.05, 30,009.72 and 6,857.75

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Solution

The fourth proportional to 20,004.05, 30,009.72 and 6,857.75 is: 10,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,004.05 : 30,009.72 = 6,857.75 : x
  2. Step 2: Convert to fraction form
    20,004.05/30,009.72 = 6,857.75/x
  3. Step 3: Cross multiply
    20,004.05x = 30,009.72 × 6,857.75
  4. Step 4: Simplify right side
    20,004.05x = 205,799,007.28
  5. Step 5: Solve for x
    x = 205,799,007.28/20,004.05
  6. Step 6: Final answer
    x = 10,287.87

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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.