Home / 11,919.84-16,456.80-11,176

Finding the Fourth Proportional to 11,919.84, 16,456.80 and 11,176

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Solution

The fourth proportional to 11,919.84, 16,456.80 and 11,176 is: 15,429.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.84 : 16,456.80 = 11,176 : x
  2. Step 2: Convert to fraction form
    11,919.84/16,456.80 = 11,176/x
  3. Step 3: Cross multiply
    11,919.84x = 16,456.80 × 11,176
  4. Step 4: Simplify right side
    11,919.84x = 183,921,196.80
  5. Step 5: Solve for x
    x = 183,921,196.80/11,919.84
  6. Step 6: Final answer
    x = 15,429.84

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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.