Home / 13,245.78-19,868.61-3,385.04

Finding the Fourth Proportional to 13,245.78, 19,868.61 and 3,385.04

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Solution

The fourth proportional to 13,245.78, 19,868.61 and 3,385.04 is: 5,077.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.78 : 19,868.61 = 3,385.04 : x
  2. Step 2: Convert to fraction form
    13,245.78/19,868.61 = 3,385.04/x
  3. Step 3: Cross multiply
    13,245.78x = 19,868.61 × 3,385.04
  4. Step 4: Simplify right side
    13,245.78x = 67,255,940.25
  5. Step 5: Solve for x
    x = 67,255,940.25/13,245.78
  6. Step 6: Final answer
    x = 5,077.54

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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.