Home / 13,170.06-18,171.54-7,863.75

Finding the Fourth Proportional to 13,170.06, 18,171.54 and 7,863.75

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Solution

The fourth proportional to 13,170.06, 18,171.54 and 7,863.75 is: 10,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.06 : 18,171.54 = 7,863.75 : x
  2. Step 2: Convert to fraction form
    13,170.06/18,171.54 = 7,863.75/x
  3. Step 3: Cross multiply
    13,170.06x = 18,171.54 × 7,863.75
  4. Step 4: Simplify right side
    13,170.06x = 142,896,447.68
  5. Step 5: Solve for x
    x = 142,896,447.68/13,170.06
  6. Step 6: Final answer
    x = 10,850.10

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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.