Home / 12,186.80-18,265.50-5,603.96

Finding the Fourth Proportional to 12,186.80, 18,265.50 and 5,603.96

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Solution

The fourth proportional to 12,186.80, 18,265.50 and 5,603.96 is: 8,399.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.80 : 18,265.50 = 5,603.96 : x
  2. Step 2: Convert to fraction form
    12,186.80/18,265.50 = 5,603.96/x
  3. Step 3: Cross multiply
    12,186.80x = 18,265.50 × 5,603.96
  4. Step 4: Simplify right side
    12,186.80x = 102,359,131.38
  5. Step 5: Solve for x
    x = 102,359,131.38/12,186.80
  6. Step 6: Final answer
    x = 8,399.18

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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.