Home / 13,289.85-18,340.11-7,321.73

Finding the Fourth Proportional to 13,289.85, 18,340.11 and 7,321.73

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Solution

The fourth proportional to 13,289.85, 18,340.11 and 7,321.73 is: 10,104.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.85 : 18,340.11 = 7,321.73 : x
  2. Step 2: Convert to fraction form
    13,289.85/18,340.11 = 7,321.73/x
  3. Step 3: Cross multiply
    13,289.85x = 18,340.11 × 7,321.73
  4. Step 4: Simplify right side
    13,289.85x = 134,281,241.89
  5. Step 5: Solve for x
    x = 134,281,241.89/13,289.85
  6. Step 6: Final answer
    x = 10,104.04

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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.