Home / 18,135.99-27,204.15-5,485.84

Finding the Fourth Proportional to 18,135.99, 27,204.15 and 5,485.84

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Solution

The fourth proportional to 18,135.99, 27,204.15 and 5,485.84 is: 8,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.99 : 27,204.15 = 5,485.84 : x
  2. Step 2: Convert to fraction form
    18,135.99/27,204.15 = 5,485.84/x
  3. Step 3: Cross multiply
    18,135.99x = 27,204.15 × 5,485.84
  4. Step 4: Simplify right side
    18,135.99x = 149,237,566.80
  5. Step 5: Solve for x
    x = 149,237,566.80/18,135.99
  6. Step 6: Final answer
    x = 8,228.81

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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.