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Finding the Fourth Proportional to 11,238.29, 16,857.74 and 2,918.12

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Solution

The fourth proportional to 11,238.29, 16,857.74 and 2,918.12 is: 4,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.29 : 16,857.74 = 2,918.12 : x
  2. Step 2: Convert to fraction form
    11,238.29/16,857.74 = 2,918.12/x
  3. Step 3: Cross multiply
    11,238.29x = 16,857.74 × 2,918.12
  4. Step 4: Simplify right side
    11,238.29x = 49,192,809.37
  5. Step 5: Solve for x
    x = 49,192,809.37/11,238.29
  6. Step 6: Final answer
    x = 4,377.25

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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.