Home / 13,530.99-20,299.23-5,739.78

Finding the Fourth Proportional to 13,530.99, 20,299.23 and 5,739.78

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Solution

The fourth proportional to 13,530.99, 20,299.23 and 5,739.78 is: 8,610.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.99 : 20,299.23 = 5,739.78 : x
  2. Step 2: Convert to fraction form
    13,530.99/20,299.23 = 5,739.78/x
  3. Step 3: Cross multiply
    13,530.99x = 20,299.23 × 5,739.78
  4. Step 4: Simplify right side
    13,530.99x = 116,513,114.37
  5. Step 5: Solve for x
    x = 116,513,114.37/13,530.99
  6. Step 6: Final answer
    x = 8,610.83

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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.