Home / 12,425.09-18,631.24-3,658.86

Finding the Fourth Proportional to 12,425.09, 18,631.24 and 3,658.86

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Solution

The fourth proportional to 12,425.09, 18,631.24 and 3,658.86 is: 5,486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.09 : 18,631.24 = 3,658.86 : x
  2. Step 2: Convert to fraction form
    12,425.09/18,631.24 = 3,658.86/x
  3. Step 3: Cross multiply
    12,425.09x = 18,631.24 × 3,658.86
  4. Step 4: Simplify right side
    12,425.09x = 68,169,089.64
  5. Step 5: Solve for x
    x = 68,169,089.64/12,425.09
  6. Step 6: Final answer
    x = 5,486.41

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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.