Home / 13,664.43-20,533.68-7,429.05

Finding the Fourth Proportional to 13,664.43, 20,533.68 and 7,429.05

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Solution

The fourth proportional to 13,664.43, 20,533.68 and 7,429.05 is: 11,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.43 : 20,533.68 = 7,429.05 : x
  2. Step 2: Convert to fraction form
    13,664.43/20,533.68 = 7,429.05/x
  3. Step 3: Cross multiply
    13,664.43x = 20,533.68 × 7,429.05
  4. Step 4: Simplify right side
    13,664.43x = 152,545,735.40
  5. Step 5: Solve for x
    x = 152,545,735.40/13,664.43
  6. Step 6: Final answer
    x = 11,163.71

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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.