Home / 13,665.60-20,481.98-5,765.04

Finding the Fourth Proportional to 13,665.60, 20,481.98 and 5,765.04

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Solution

The fourth proportional to 13,665.60, 20,481.98 and 5,765.04 is: 8,640.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.60 : 20,481.98 = 5,765.04 : x
  2. Step 2: Convert to fraction form
    13,665.60/20,481.98 = 5,765.04/x
  3. Step 3: Cross multiply
    13,665.60x = 20,481.98 × 5,765.04
  4. Step 4: Simplify right side
    13,665.60x = 118,079,405.15
  5. Step 5: Solve for x
    x = 118,079,405.15/13,665.60
  6. Step 6: Final answer
    x = 8,640.63

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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.