Home / 9,018.20-13,520.90-3,469.40

Finding the Fourth Proportional to 9,018.20, 13,520.90 and 3,469.40

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Solution

The fourth proportional to 9,018.20, 13,520.90 and 3,469.40 is: 5,201.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,018.20 : 13,520.90 = 3,469.40 : x
  2. Step 2: Convert to fraction form
    9,018.20/13,520.90 = 3,469.40/x
  3. Step 3: Cross multiply
    9,018.20x = 13,520.90 × 3,469.40
  4. Step 4: Simplify right side
    9,018.20x = 46,909,410.46
  5. Step 5: Solve for x
    x = 46,909,410.46/9,018.20
  6. Step 6: Final answer
    x = 5,201.64

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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.