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Finding the Fourth Proportional to 18,608.13, 27,912.19 and 4,757.13

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Solution

The fourth proportional to 18,608.13, 27,912.19 and 4,757.13 is: 7,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.13 : 27,912.19 = 4,757.13 : x
  2. Step 2: Convert to fraction form
    18,608.13/27,912.19 = 4,757.13/x
  3. Step 3: Cross multiply
    18,608.13x = 27,912.19 × 4,757.13
  4. Step 4: Simplify right side
    18,608.13x = 132,781,916.41
  5. Step 5: Solve for x
    x = 132,781,916.41/18,608.13
  6. Step 6: Final answer
    x = 7,135.69

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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.