Home / 12,785.12-17,644.08-7,196

Finding the Fourth Proportional to 12,785.12, 17,644.08 and 7,196

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Solution

The fourth proportional to 12,785.12, 17,644.08 and 7,196 is: 9,930.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.12 : 17,644.08 = 7,196 : x
  2. Step 2: Convert to fraction form
    12,785.12/17,644.08 = 7,196/x
  3. Step 3: Cross multiply
    12,785.12x = 17,644.08 × 7,196
  4. Step 4: Simplify right side
    12,785.12x = 126,966,799.68
  5. Step 5: Solve for x
    x = 126,966,799.68/12,785.12
  6. Step 6: Final answer
    x = 9,930.83

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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.