Home / 13,618.63-20,429.20-5,299.27

Finding the Fourth Proportional to 13,618.63, 20,429.20 and 5,299.27

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Solution

The fourth proportional to 13,618.63, 20,429.20 and 5,299.27 is: 7,949.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.63 : 20,429.20 = 5,299.27 : x
  2. Step 2: Convert to fraction form
    13,618.63/20,429.20 = 5,299.27/x
  3. Step 3: Cross multiply
    13,618.63x = 20,429.20 × 5,299.27
  4. Step 4: Simplify right side
    13,618.63x = 108,259,846.68
  5. Step 5: Solve for x
    x = 108,259,846.68/13,618.63
  6. Step 6: Final answer
    x = 7,949.39

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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.