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Finding the Fourth Proportional to 18,800.16, 25,942.32 and 11,245

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Solution

The fourth proportional to 18,800.16, 25,942.32 and 11,245 is: 15,516.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.16 : 25,942.32 = 11,245 : x
  2. Step 2: Convert to fraction form
    18,800.16/25,942.32 = 11,245/x
  3. Step 3: Cross multiply
    18,800.16x = 25,942.32 × 11,245
  4. Step 4: Simplify right side
    18,800.16x = 291,721,388.40
  5. Step 5: Solve for x
    x = 291,721,388.40/18,800.16
  6. Step 6: Final answer
    x = 15,516.96

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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.