Home / 20,189.73-27,861.61-11,114.80

Finding the Fourth Proportional to 20,189.73, 27,861.61 and 11,114.80

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Solution

The fourth proportional to 20,189.73, 27,861.61 and 11,114.80 is: 15,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.73 : 27,861.61 = 11,114.80 : x
  2. Step 2: Convert to fraction form
    20,189.73/27,861.61 = 11,114.80/x
  3. Step 3: Cross multiply
    20,189.73x = 27,861.61 × 11,114.80
  4. Step 4: Simplify right side
    20,189.73x = 309,676,222.83
  5. Step 5: Solve for x
    x = 309,676,222.83/20,189.73
  6. Step 6: Final answer
    x = 15,338.30

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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.