Home / 13,961.85-20,949.87-9,285.12

Finding the Fourth Proportional to 13,961.85, 20,949.87 and 9,285.12

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Solution

The fourth proportional to 13,961.85, 20,949.87 and 9,285.12 is: 13,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.85 : 20,949.87 = 9,285.12 : x
  2. Step 2: Convert to fraction form
    13,961.85/20,949.87 = 9,285.12/x
  3. Step 3: Cross multiply
    13,961.85x = 20,949.87 × 9,285.12
  4. Step 4: Simplify right side
    13,961.85x = 194,521,905.76
  5. Step 5: Solve for x
    x = 194,521,905.76/13,961.85
  6. Step 6: Final answer
    x = 13,932.39

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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.