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Finding the Fourth Proportional to 18,620.44, 25,696.03 and 13,861.67

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Solution

The fourth proportional to 18,620.44, 25,696.03 and 13,861.67 is: 19,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.44 : 25,696.03 = 13,861.67 : x
  2. Step 2: Convert to fraction form
    18,620.44/25,696.03 = 13,861.67/x
  3. Step 3: Cross multiply
    18,620.44x = 25,696.03 × 13,861.67
  4. Step 4: Simplify right side
    18,620.44x = 356,189,888.17
  5. Step 5: Solve for x
    x = 356,189,888.17/18,620.44
  6. Step 6: Final answer
    x = 19,128.97

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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.