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Finding the Fourth Proportional to 18,320.70, 27,480.84 and 4,469.70

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Solution

The fourth proportional to 18,320.70, 27,480.84 and 4,469.70 is: 6,704.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.70 : 27,480.84 = 4,469.70 : x
  2. Step 2: Convert to fraction form
    18,320.70/27,480.84 = 4,469.70/x
  3. Step 3: Cross multiply
    18,320.70x = 27,480.84 × 4,469.70
  4. Step 4: Simplify right side
    18,320.70x = 122,831,110.55
  5. Step 5: Solve for x
    x = 122,831,110.55/18,320.70
  6. Step 6: Final answer
    x = 6,704.50

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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.