Home / 13,992.72-20,984.10-4,631

Finding the Fourth Proportional to 13,992.72, 20,984.10 and 4,631

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Solution

The fourth proportional to 13,992.72, 20,984.10 and 4,631 is: 6,944.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.72 : 20,984.10 = 4,631 : x
  2. Step 2: Convert to fraction form
    13,992.72/20,984.10 = 4,631/x
  3. Step 3: Cross multiply
    13,992.72x = 20,984.10 × 4,631
  4. Step 4: Simplify right side
    13,992.72x = 97,177,367.10
  5. Step 5: Solve for x
    x = 97,177,367.10/13,992.72
  6. Step 6: Final answer
    x = 6,944.85

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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.