Home / 12,189.07-18,284.76-3,423.96

Finding the Fourth Proportional to 12,189.07, 18,284.76 and 3,423.96

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Solution

The fourth proportional to 12,189.07, 18,284.76 and 3,423.96 is: 5,136.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.07 : 18,284.76 = 3,423.96 : x
  2. Step 2: Convert to fraction form
    12,189.07/18,284.76 = 3,423.96/x
  3. Step 3: Cross multiply
    12,189.07x = 18,284.76 × 3,423.96
  4. Step 4: Simplify right side
    12,189.07x = 62,606,286.85
  5. Step 5: Solve for x
    x = 62,606,286.85/12,189.07
  6. Step 6: Final answer
    x = 5,136.26

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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.