Home / 20,143.03-30,189.03-11,382.88

Finding the Fourth Proportional to 20,143.03, 30,189.03 and 11,382.88

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Solution

The fourth proportional to 20,143.03, 30,189.03 and 11,382.88 is: 17,059.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.03 : 30,189.03 = 11,382.88 : x
  2. Step 2: Convert to fraction form
    20,143.03/30,189.03 = 11,382.88/x
  3. Step 3: Cross multiply
    20,143.03x = 30,189.03 × 11,382.88
  4. Step 4: Simplify right side
    20,143.03x = 343,638,105.81
  5. Step 5: Solve for x
    x = 343,638,105.81/20,143.03
  6. Step 6: Final answer
    x = 17,059.90

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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.