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Finding the Fourth Proportional to 18,607.57, 27,912.26 and 7,512.87

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Solution

The fourth proportional to 18,607.57, 27,912.26 and 7,512.87 is: 11,269.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.57 : 27,912.26 = 7,512.87 : x
  2. Step 2: Convert to fraction form
    18,607.57/27,912.26 = 7,512.87/x
  3. Step 3: Cross multiply
    18,607.57x = 27,912.26 × 7,512.87
  4. Step 4: Simplify right side
    18,607.57x = 209,701,180.79
  5. Step 5: Solve for x
    x = 209,701,180.79/18,607.57
  6. Step 6: Final answer
    x = 11,269.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.