Home / 13,107.36-18,087.66-7,518

Finding the Fourth Proportional to 13,107.36, 18,087.66 and 7,518

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Solution

The fourth proportional to 13,107.36, 18,087.66 and 7,518 is: 10,374.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.36 : 18,087.66 = 7,518 : x
  2. Step 2: Convert to fraction form
    13,107.36/18,087.66 = 7,518/x
  3. Step 3: Cross multiply
    13,107.36x = 18,087.66 × 7,518
  4. Step 4: Simplify right side
    13,107.36x = 135,983,027.88
  5. Step 5: Solve for x
    x = 135,983,027.88/13,107.36
  6. Step 6: Final answer
    x = 10,374.56

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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.