Home / 11,931.09-16,469.49-7,950.75

Finding the Fourth Proportional to 11,931.09, 16,469.49 and 7,950.75

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Solution

The fourth proportional to 11,931.09, 16,469.49 and 7,950.75 is: 10,975.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.09 : 16,469.49 = 7,950.75 : x
  2. Step 2: Convert to fraction form
    11,931.09/16,469.49 = 7,950.75/x
  3. Step 3: Cross multiply
    11,931.09x = 16,469.49 × 7,950.75
  4. Step 4: Simplify right side
    11,931.09x = 130,944,715.27
  5. Step 5: Solve for x
    x = 130,944,715.27/11,931.09
  6. Step 6: Final answer
    x = 10,975.09

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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.