Home / 13,886.30-19,163.60-7,917.90

Finding the Fourth Proportional to 13,886.30, 19,163.60 and 7,917.90

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Solution

The fourth proportional to 13,886.30, 19,163.60 and 7,917.90 is: 10,926.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.30 : 19,163.60 = 7,917.90 : x
  2. Step 2: Convert to fraction form
    13,886.30/19,163.60 = 7,917.90/x
  3. Step 3: Cross multiply
    13,886.30x = 19,163.60 × 7,917.90
  4. Step 4: Simplify right side
    13,886.30x = 151,735,468.44
  5. Step 5: Solve for x
    x = 151,735,468.44/13,886.30
  6. Step 6: Final answer
    x = 10,926.99

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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.