Home / 13,679.45-20,510.94-5,349.54

Finding the Fourth Proportional to 13,679.45, 20,510.94 and 5,349.54

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Solution

The fourth proportional to 13,679.45, 20,510.94 and 5,349.54 is: 8,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.45 : 20,510.94 = 5,349.54 : x
  2. Step 2: Convert to fraction form
    13,679.45/20,510.94 = 5,349.54/x
  3. Step 3: Cross multiply
    13,679.45x = 20,510.94 × 5,349.54
  4. Step 4: Simplify right side
    13,679.45x = 109,724,093.97
  5. Step 5: Solve for x
    x = 109,724,093.97/13,679.45
  6. Step 6: Final answer
    x = 8,021.09

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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.