Home / 11,836.35-16,335.95-7,121.61

Finding the Fourth Proportional to 11,836.35, 16,335.95 and 7,121.61

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Solution

The fourth proportional to 11,836.35, 16,335.95 and 7,121.61 is: 9,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,836.35 : 16,335.95 = 7,121.61 : x
  2. Step 2: Convert to fraction form
    11,836.35/16,335.95 = 7,121.61/x
  3. Step 3: Cross multiply
    11,836.35x = 16,335.95 × 7,121.61
  4. Step 4: Simplify right side
    11,836.35x = 116,338,229.27
  5. Step 5: Solve for x
    x = 116,338,229.27/11,836.35
  6. Step 6: Final answer
    x = 9,828.89

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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.