Home / 13,761.90-20,640.45-4,992.30

Finding the Fourth Proportional to 13,761.90, 20,640.45 and 4,992.30

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Solution

The fourth proportional to 13,761.90, 20,640.45 and 4,992.30 is: 7,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.90 : 20,640.45 = 4,992.30 : x
  2. Step 2: Convert to fraction form
    13,761.90/20,640.45 = 4,992.30/x
  3. Step 3: Cross multiply
    13,761.90x = 20,640.45 × 4,992.30
  4. Step 4: Simplify right side
    13,761.90x = 103,043,318.54
  5. Step 5: Solve for x
    x = 103,043,318.54/13,761.90
  6. Step 6: Final answer
    x = 7,487.58

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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.