Home / 19,899.39-27,455.72-12,342.09

Finding the Fourth Proportional to 19,899.39, 27,455.72 and 12,342.09

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Solution

The fourth proportional to 19,899.39, 27,455.72 and 12,342.09 is: 17,028.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.39 : 27,455.72 = 12,342.09 : x
  2. Step 2: Convert to fraction form
    19,899.39/27,455.72 = 12,342.09/x
  3. Step 3: Cross multiply
    19,899.39x = 27,455.72 × 12,342.09
  4. Step 4: Simplify right side
    19,899.39x = 338,860,905.54
  5. Step 5: Solve for x
    x = 338,860,905.54/19,899.39
  6. Step 6: Final answer
    x = 17,028.71

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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.