Home / 18,131.60-27,187.96-6,443.12

Finding the Fourth Proportional to 18,131.60, 27,187.96 and 6,443.12

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Solution

The fourth proportional to 18,131.60, 27,187.96 and 6,443.12 is: 9,661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.60 : 27,187.96 = 6,443.12 : x
  2. Step 2: Convert to fraction form
    18,131.60/27,187.96 = 6,443.12/x
  3. Step 3: Cross multiply
    18,131.60x = 27,187.96 × 6,443.12
  4. Step 4: Simplify right side
    18,131.60x = 175,175,288.84
  5. Step 5: Solve for x
    x = 175,175,288.84/18,131.60
  6. Step 6: Final answer
    x = 9,661.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.