Home / 18,539.42-27,813.58-5,391.90

Finding the Fourth Proportional to 18,539.42, 27,813.58 and 5,391.90

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Solution

The fourth proportional to 18,539.42, 27,813.58 and 5,391.90 is: 8,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.42 : 27,813.58 = 5,391.90 : x
  2. Step 2: Convert to fraction form
    18,539.42/27,813.58 = 5,391.90/x
  3. Step 3: Cross multiply
    18,539.42x = 27,813.58 × 5,391.90
  4. Step 4: Simplify right side
    18,539.42x = 149,968,028.52
  5. Step 5: Solve for x
    x = 149,968,028.52/18,539.42
  6. Step 6: Final answer
    x = 8,089.15

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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.