Home / 11,308.24-16,939.68-5,390.85

Finding the Fourth Proportional to 11,308.24, 16,939.68 and 5,390.85

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Solution

The fourth proportional to 11,308.24, 16,939.68 and 5,390.85 is: 8,075.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,308.24 : 16,939.68 = 5,390.85 : x
  2. Step 2: Convert to fraction form
    11,308.24/16,939.68 = 5,390.85/x
  3. Step 3: Cross multiply
    11,308.24x = 16,939.68 × 5,390.85
  4. Step 4: Simplify right side
    11,308.24x = 91,319,317.24
  5. Step 5: Solve for x
    x = 91,319,317.24/11,308.24
  6. Step 6: Final answer
    x = 8,075.47

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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.