Home / 11,713.15-16,161.96-7,939.36

Finding the Fourth Proportional to 11,713.15, 16,161.96 and 7,939.36

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Solution

The fourth proportional to 11,713.15, 16,161.96 and 7,939.36 is: 10,954.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,713.15 : 16,161.96 = 7,939.36 : x
  2. Step 2: Convert to fraction form
    11,713.15/16,161.96 = 7,939.36/x
  3. Step 3: Cross multiply
    11,713.15x = 16,161.96 × 7,939.36
  4. Step 4: Simplify right side
    11,713.15x = 128,315,618.75
  5. Step 5: Solve for x
    x = 128,315,618.75/11,713.15
  6. Step 6: Final answer
    x = 10,954.83

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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.