Home / 20,189.55-27,861.75-11,237.43

Finding the Fourth Proportional to 20,189.55, 27,861.75 and 11,237.43

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Solution

The fourth proportional to 20,189.55, 27,861.75 and 11,237.43 is: 15,507.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.55 : 27,861.75 = 11,237.43 : x
  2. Step 2: Convert to fraction form
    20,189.55/27,861.75 = 11,237.43/x
  3. Step 3: Cross multiply
    20,189.55x = 27,861.75 × 11,237.43
  4. Step 4: Simplify right side
    20,189.55x = 313,094,465.30
  5. Step 5: Solve for x
    x = 313,094,465.30/20,189.55
  6. Step 6: Final answer
    x = 15,507.75

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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.