Home / 11,890.98-16,390.68-9,369.25

Finding the Fourth Proportional to 11,890.98, 16,390.68 and 9,369.25

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Solution

The fourth proportional to 11,890.98, 16,390.68 and 9,369.25 is: 12,914.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.98 : 16,390.68 = 9,369.25 : x
  2. Step 2: Convert to fraction form
    11,890.98/16,390.68 = 9,369.25/x
  3. Step 3: Cross multiply
    11,890.98x = 16,390.68 × 9,369.25
  4. Step 4: Simplify right side
    11,890.98x = 153,568,378.59
  5. Step 5: Solve for x
    x = 153,568,378.59/11,890.98
  6. Step 6: Final answer
    x = 12,914.69

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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.