Home / 20,191.76-27,861.56-11,576.72

Finding the Fourth Proportional to 20,191.76, 27,861.56 and 11,576.72

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Solution

The fourth proportional to 20,191.76, 27,861.56 and 11,576.72 is: 15,974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.76 : 27,861.56 = 11,576.72 : x
  2. Step 2: Convert to fraction form
    20,191.76/27,861.56 = 11,576.72/x
  3. Step 3: Cross multiply
    20,191.76x = 27,861.56 × 11,576.72
  4. Step 4: Simplify right side
    20,191.76x = 322,545,478.88
  5. Step 5: Solve for x
    x = 322,545,478.88/20,191.76
  6. Step 6: Final answer
    x = 15,974.11

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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.