Home / 20,189.85-27,861.75-11,806.35

Finding the Fourth Proportional to 20,189.85, 27,861.75 and 11,806.35

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Solution

The fourth proportional to 20,189.85, 27,861.75 and 11,806.35 is: 16,292.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.85 : 27,861.75 = 11,806.35 : x
  2. Step 2: Convert to fraction form
    20,189.85/27,861.75 = 11,806.35/x
  3. Step 3: Cross multiply
    20,189.85x = 27,861.75 × 11,806.35
  4. Step 4: Simplify right side
    20,189.85x = 328,945,572.11
  5. Step 5: Solve for x
    x = 328,945,572.11/20,189.85
  6. Step 6: Final answer
    x = 16,292.62

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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.