Home / 20,189.72-27,861.53-11,237.22

Finding the Fourth Proportional to 20,189.72, 27,861.53 and 11,237.22

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Solution

The fourth proportional to 20,189.72, 27,861.53 and 11,237.22 is: 15,507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.72 : 27,861.53 = 11,237.22 : x
  2. Step 2: Convert to fraction form
    20,189.72/27,861.53 = 11,237.22/x
  3. Step 3: Cross multiply
    20,189.72x = 27,861.53 × 11,237.22
  4. Step 4: Simplify right side
    20,189.72x = 313,086,183.71
  5. Step 5: Solve for x
    x = 313,086,183.71/20,189.72
  6. Step 6: Final answer
    x = 15,507.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.