Home / 13,511.97-18,645.10-7,845.61

Finding the Fourth Proportional to 13,511.97, 18,645.10 and 7,845.61

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Solution

The fourth proportional to 13,511.97, 18,645.10 and 7,845.61 is: 10,826.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.97 : 18,645.10 = 7,845.61 : x
  2. Step 2: Convert to fraction form
    13,511.97/18,645.10 = 7,845.61/x
  3. Step 3: Cross multiply
    13,511.97x = 18,645.10 × 7,845.61
  4. Step 4: Simplify right side
    13,511.97x = 146,282,183.01
  5. Step 5: Solve for x
    x = 146,282,183.01/13,511.97
  6. Step 6: Final answer
    x = 10,826.12

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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.