Home / 11,876.28-16,390.80-7,163.16

Finding the Fourth Proportional to 11,876.28, 16,390.80 and 7,163.16

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Solution

The fourth proportional to 11,876.28, 16,390.80 and 7,163.16 is: 9,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,876.28 : 16,390.80 = 7,163.16 : x
  2. Step 2: Convert to fraction form
    11,876.28/16,390.80 = 7,163.16/x
  3. Step 3: Cross multiply
    11,876.28x = 16,390.80 × 7,163.16
  4. Step 4: Simplify right side
    11,876.28x = 117,409,922.93
  5. Step 5: Solve for x
    x = 117,409,922.93/11,876.28
  6. Step 6: Final answer
    x = 9,886.09

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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.