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Finding the Fourth Proportional to 18,367.68, 27,551.76 and 5,220.03

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Solution

The fourth proportional to 18,367.68, 27,551.76 and 5,220.03 is: 7,830.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.68 : 27,551.76 = 5,220.03 : x
  2. Step 2: Convert to fraction form
    18,367.68/27,551.76 = 5,220.03/x
  3. Step 3: Cross multiply
    18,367.68x = 27,551.76 × 5,220.03
  4. Step 4: Simplify right side
    18,367.68x = 143,821,013.75
  5. Step 5: Solve for x
    x = 143,821,013.75/18,367.68
  6. Step 6: Final answer
    x = 7,830.11

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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.