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Finding the Fourth Proportional to 18,065.68, 27,100.48 and 4,918.16

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Solution

The fourth proportional to 18,065.68, 27,100.48 and 4,918.16 is: 7,377.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.68 : 27,100.48 = 4,918.16 : x
  2. Step 2: Convert to fraction form
    18,065.68/27,100.48 = 4,918.16/x
  3. Step 3: Cross multiply
    18,065.68x = 27,100.48 × 4,918.16
  4. Step 4: Simplify right side
    18,065.68x = 133,284,496.72
  5. Step 5: Solve for x
    x = 133,284,496.72/18,065.68
  6. Step 6: Final answer
    x = 7,377.77

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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.