Home / 12,135.24-18,205-5,019.46

Finding the Fourth Proportional to 12,135.24, 18,205 and 5,019.46

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Solution

The fourth proportional to 12,135.24, 18,205 and 5,019.46 is: 7,530.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.24 : 18,205 = 5,019.46 : x
  2. Step 2: Convert to fraction form
    12,135.24/18,205 = 5,019.46/x
  3. Step 3: Cross multiply
    12,135.24x = 18,205 × 5,019.46
  4. Step 4: Simplify right side
    12,135.24x = 91,379,269.30
  5. Step 5: Solve for x
    x = 91,379,269.30/12,135.24
  6. Step 6: Final answer
    x = 7,530.08

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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.