Home / 13,439.34-20,163.07-5,429.99

Finding the Fourth Proportional to 13,439.34, 20,163.07 and 5,429.99

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Solution

The fourth proportional to 13,439.34, 20,163.07 and 5,429.99 is: 8,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.34 : 20,163.07 = 5,429.99 : x
  2. Step 2: Convert to fraction form
    13,439.34/20,163.07 = 5,429.99/x
  3. Step 3: Cross multiply
    13,439.34x = 20,163.07 × 5,429.99
  4. Step 4: Simplify right side
    13,439.34x = 109,485,167.65
  5. Step 5: Solve for x
    x = 109,485,167.65/13,439.34
  6. Step 6: Final answer
    x = 8,146.62

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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.