Home / 14,639.60-20,202.75-8,179.25

Finding the Fourth Proportional to 14,639.60, 20,202.75 and 8,179.25

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Solution

The fourth proportional to 14,639.60, 20,202.75 and 8,179.25 is: 11,287.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.60 : 20,202.75 = 8,179.25 : x
  2. Step 2: Convert to fraction form
    14,639.60/20,202.75 = 8,179.25/x
  3. Step 3: Cross multiply
    14,639.60x = 20,202.75 × 8,179.25
  4. Step 4: Simplify right side
    14,639.60x = 165,243,241.92
  5. Step 5: Solve for x
    x = 165,243,241.92/14,639.60
  6. Step 6: Final answer
    x = 11,287.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.