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Finding the Fourth Proportional to 18,651.15, 27,947.33 and 11,136.29

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Solution

The fourth proportional to 18,651.15, 27,947.33 and 11,136.29 is: 16,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.15 : 27,947.33 = 11,136.29 : x
  2. Step 2: Convert to fraction form
    18,651.15/27,947.33 = 11,136.29/x
  3. Step 3: Cross multiply
    18,651.15x = 27,947.33 × 11,136.29
  4. Step 4: Simplify right side
    18,651.15x = 311,229,376.19
  5. Step 5: Solve for x
    x = 311,229,376.19/18,651.15
  6. Step 6: Final answer
    x = 16,686.87

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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.