Home / 13,150.25-19,728.56-4,385.85

Finding the Fourth Proportional to 13,150.25, 19,728.56 and 4,385.85

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Solution

The fourth proportional to 13,150.25, 19,728.56 and 4,385.85 is: 6,579.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150.25 : 19,728.56 = 4,385.85 : x
  2. Step 2: Convert to fraction form
    13,150.25/19,728.56 = 4,385.85/x
  3. Step 3: Cross multiply
    13,150.25x = 19,728.56 × 4,385.85
  4. Step 4: Simplify right side
    13,150.25x = 86,526,441.86
  5. Step 5: Solve for x
    x = 86,526,441.86/13,150.25
  6. Step 6: Final answer
    x = 6,579.83

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1.5x scale

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.