Home / 13,101.05-18,078.87-7,132.73

Finding the Fourth Proportional to 13,101.05, 18,078.87 and 7,132.73

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Solution

The fourth proportional to 13,101.05, 18,078.87 and 7,132.73 is: 9,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.05 : 18,078.87 = 7,132.73 : x
  2. Step 2: Convert to fraction form
    13,101.05/18,078.87 = 7,132.73/x
  3. Step 3: Cross multiply
    13,101.05x = 18,078.87 × 7,132.73
  4. Step 4: Simplify right side
    13,101.05x = 128,951,634.77
  5. Step 5: Solve for x
    x = 128,951,634.77/13,101.05
  6. Step 6: Final answer
    x = 9,842.85

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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.