Home / 11,909.24-16,435.68-6,605.09

Finding the Fourth Proportional to 11,909.24, 16,435.68 and 6,605.09

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Solution

The fourth proportional to 11,909.24, 16,435.68 and 6,605.09 is: 9,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.24 : 16,435.68 = 6,605.09 : x
  2. Step 2: Convert to fraction form
    11,909.24/16,435.68 = 6,605.09/x
  3. Step 3: Cross multiply
    11,909.24x = 16,435.68 × 6,605.09
  4. Step 4: Simplify right side
    11,909.24x = 108,559,145.61
  5. Step 5: Solve for x
    x = 108,559,145.61/11,909.24
  6. Step 6: Final answer
    x = 9,115.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.