Home / 18,438.62-27,661.48-7,907.16

Finding the Fourth Proportional to 18,438.62, 27,661.48 and 7,907.16

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Solution

The fourth proportional to 18,438.62, 27,661.48 and 7,907.16 is: 11,862.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.62 : 27,661.48 = 7,907.16 : x
  2. Step 2: Convert to fraction form
    18,438.62/27,661.48 = 7,907.16/x
  3. Step 3: Cross multiply
    18,438.62x = 27,661.48 × 7,907.16
  4. Step 4: Simplify right side
    18,438.62x = 218,723,748.20
  5. Step 5: Solve for x
    x = 218,723,748.20/18,438.62
  6. Step 6: Final answer
    x = 11,862.27

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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.